Welcome to the AndroidForums, rez1 (you know this isn't XDA, right
I don't know which carrier you have for the SGS2, but here are the all-things-root forums for the two largest ones here at AF:
Galaxy S2 (AT&T) - All Things Root - Android Forums
Galaxy S2 (International) - All Things Root - Android Forums
They might be able to help answer your questions about reverting back to base Gingerbread.
Cheers and glad you signed-up with us here at AF