Dear Rick Knowles:
 
Let'me report that Winstone doesn't with mod_jk-1.2.32, the latest version, though it had been worked with up to mod_jk-1.2.31.
What happen is it get an out-of-range exception at new String(packet, position, length, encoding) in Ajp13IncomingPacket.java.
The reason is simple.
From 1.2.32, the packet has attributes to incorporate JK_LB_ACTIVATION.
 
You can see an example of the packet below.
 
00000000  0202 0008 4854 5450 2f31 2e31 0000 122f  : &&&&HTTP/1.1&&&/
00000010  7765 6261 7070 2f69 6e64 6578 2e68 746d  : webapp/index.htm
00000020  6c00 0009 3132 372e 302e 302e 3100 ffff  : l&&&127.0.0.1&??
00000030  0009 6c6f 6361 6c68 6f73 7400 0050 0000  : &&localhost&&P&&
00000040  0ba0 0b00 096c 6f63 616c 686f 7374 00a0  : &?&&&localhost&?
00000050  0600 0a6b 6565 702d 616c 6976 6500 000d  : &&&keep-alive&&&
00000060  4361 6368 652d 436f 6e74 726f 6c00 0009  : Cache-Control&&&
00000070  6d61 782d 6167 653d 3000 a00e 0062 4d6f  : max-age=0&?&&bMo
00000080  7a69 6c6c 612f 352e 3020 2857 696e 646f  : zilla/5.0 (Windo
00000090  7773 204e 5420 352e 3129 2041 7070 6c65  : ws NT 5.1) Apple
000000a0  5765 624b 6974 2f35 3335 2e37 2028 4b48  : WebKit/535.7 (KH
000000b0  544d 4c2c 206c 696b 6520 4765 636b 6f29  : TML, like Gecko)
000000c0  2043 6872 6f6d 652f 3136 2e30 2e39 3132  :  Chrome/16.0.912
000000d0  2e37 3520 5361 6661 7269 2f35 3335 2e37  : .75 Safari/535.7
000000e0  00a0 0100 3f74 6578 742f 6874 6d6c 2c61  : &?&&?text/html,a
000000f0  7070 6c69 6361 7469 6f6e 2f78 6874 6d6c  : pplication/xhtml
00000100  2b78 6d6c 2c61 7070 6c69 6361 7469 6f6e  : +xml,application
00000110  2f78 6d6c 3b71 3d30 2e39 2c2a 2f2a 3b71  : /xml;q=0.9,*/*;q
00000120  3d30 2e38 0000 0f41 6363 6570 742d 456e  : =0.8&&&Accept-En
00000130  636f 6469 6e67 0000 1167 7a69 702c 6465  : coding&&&gzip,de
00000140  666c 6174 652c 7364 6368 0000 0f41 6363  : flate,sdch&&&Acc
00000150  6570 742d 4c61 6e67 7561 6765 0000 176a  : ept-Language&&&j
00000160  612c 656e 2d55 533b 713d 302e 382c 656e  : a,en-US;q=0.8,en
00000170  3b71 3d30 2e36 0000 0e41 6363 6570 742d  : ;q=0.6&&&Accept-
00000180  4368 6172 7365 7400 001d 5368 6966 745f  : Charset&&&Shift_
00000190  4a49 532c 7574 662d 383b 713d 302e 372c  : JIS,utf-8;q=0.7,
000001a0  2a3b 713d 302e 3300 a009 000e 6963 6f6e  : *;q=0.3&?&&&icon
000001b0  5369 7a65 3d31 3678 3136 0000 1149 662d  : Size=16x16&&&If-
000001c0  4d6f 6469 6669 6564 2d53 696e 6365 0000  : Modified-Since&&
000001d0  1d4d 6f6e 2c20 3139 204a 756c 2032 3031  : &Mon, 19 Jul 201
000001e0  3020 3035 3a35 393a 3436 2047 4d54 00a0  : 0 05:59:46 GMT&?
000001f0  0800 0130 000a 000f 414a 505f 5245 4d4f  : &&&0&&&&AJP_REMO
00000200  5445 5f50 4f52 5400 0004 3337 3330 000a  : TE_PORT&&&3730&&
00000210  0010 4a4b 5f4c 425f 4143 5449 5641 5449  : &&JK_LB_ACTIVATI
00000220  4f4e 00ff ffff                           : ON&???
The attribute begins at 1f5 above.
In addition, you have to expect the value of the attribute name when code is 0A as you see below.
And, it seems the value length of ffff means no value parameter comes after that as you see above.
 
For your reference, I will attach 1.2.31 packet below, which has not attribute section.
 
00000000  0202 0008 4854 5450 2f31 2e31 0000 072f  : &&&&HTTP/1.1&&&/
00000010  7765 6261 7070 0000 0931 3237 2e30 2e30  : webapp&&&127.0.0
00000020  2e31 00ff ff00 096c 6f63 616c 686f 7374  : .1&??&&localhost
00000030  0000 5000 0009 a00b 0009 6c6f 6361 6c68  : &&P&&&?&&&localh
00000040  6f73 7400 a006 000a 6b65 6570 2d61 6c69  : ost&?&&&keep-ali
00000050  7665 00a0 0e00 624d 6f7a 696c 6c61 2f35  : ve&?&&bMozilla/5
00000060  2e30 2028 5769 6e64 6f77 7320 4e54 2035  : .0 (Windows NT 5
00000070  2e31 2920 4170 706c 6557 6562 4b69 742f  : .1) AppleWebKit/
00000080  3533 352e 3720 284b 4854 4d4c 2c20 6c69  : 535.7 (KHTML, li
00000090  6b65 2047 6563 6b6f 2920 4368 726f 6d65  : ke Gecko) Chrome
000000a0  2f31 362e 302e 3931 322e 3735 2053 6166  : /16.0.912.75 Saf
000000b0  6172 692f 3533 352e 3700 a001 003f 7465  : ari/535.7&?&&?te
000000c0  7874 2f68 746d 6c2c 6170 706c 6963 6174  : xt/html,applicat
000000d0  696f 6e2f 7868 746d 6c2b 786d 6c2c 6170  : ion/xhtml+xml,ap
000000e0  706c 6963 6174 696f 6e2f 786d 6c3b 713d  : plication/xml;q=
000000f0  302e 392c 2a2f 2a3b 713d 302e 3800 000f  : 0.9,*/*;q=0.8&&&
00000100  4163 6365 7074 2d45 6e63 6f64 696e 6700  : Accept-Encoding&
00000110  0011 677a 6970 2c64 6566 6c61 7465 2c73  : &&gzip,deflate,s
00000120  6463 6800 000f 4163 6365 7074 2d4c 616e  : dch&&&Accept-Lan
00000130  6775 6167 6500 0017 6a61 2c65 6e2d 5553  : guage&&&ja,en-US
00000140  3b71 3d30 2e38 2c65 6e3b 713d 302e 3600  : ;q=0.8,en;q=0.6&
00000150  000e 4163 6365 7074 2d43 6861 7273 6574  : &&Accept-Charset
00000160  0000 1d53 6869 6674 5f4a 4953 2c75 7466  : &&&Shift_JIS,utf
00000170  2d38 3b71 3d30 2e37 2c2a 3b71 3d30 2e33  : -8;q=0.7,*;q=0.3
00000180  00a0 0900 0e69 636f 6e53 697a 653d 3136  : &?&&&iconSize=16
00000190  7831 3600 a008 0001 3000 ff              : x16&?&&&0&?
Finally, your document at http://winstone.sourceforge.net/ has some flaw.
 
 
The document has the following.
<Location "/<Winstone Prefix>/*">
JkMount /* ajp13
</Location>
However, I think the second line should be:
 
JkMount ajp13
Thank you in advance for your consideration.
 
Sincerely,
Mamoru Asagami