I got a GWR Castle with sound and I agree on the function button set up issue.
I totally agree with the sound functions and it's actually the sole reason why I just don't bother paying out more money for a sound fitted loco. 99% of the time I'm running diesel and on the sound fitted models there are so many sounds that should be fully automatic but aren't. It disappointing.
i wonder if Bachmann have formatted the chip this way cos 28 functions or whatever sounds (no pun intended) than say 9 functions if the ones you mentioned were automatic.
you need a banking engine on the gradient!
Roco also has a similar system for DCC fitting
Excellent analysis of the sound allocation. I agree totally.