I didn't read your original post so I'm shooting in the dark here. I had problems with my synth definition when moving from BIAB to RB. I assume you read the Patches configuration file in the RB directory. The problem I had was that the lower banks had to be defined BEFORE the upper banks. Below is an excerpt from the file that eventually worked. Also, note the use of commas rather than periods.

1=Concert Grand 2
2=Modern Piano
3=Electric Grand
.
.
.
1,95,16=Concert Grand
1,95,17=Studio Grand
1,95,18=Mellow Grand

Rachael