|Hello Micheal and friends,|
I have created drum kit mappings for all the kits available on my Yamaha PSR-E303. It appears to be the same mapping needed for the Yamaha PSR-550 and the Yamaha PSR-E403. I did not check them all. But I imagine it is a standard of some sorts. I noticed that PSR-550 included a 'style' kit that I did not include as a mapping.
The .rgd file contains the xg drum kits bank and mappings for each kit--except for the 'style' kit.
I hope this is helpful.