Some final code requests (and screenshots)

I think this bug was created with HatZen08's Basic Offering patch.

Have you tried applying the patch to a clean ROM? If it is the culprit you could just revert $C22A0B-$$C22A1B to normal. $C3FC00-$C3FC15 is free space.

Ok, I spent the whole morning looking back through previous builds of my hack to see when this issue started, and it doesn't seem to be linked to the basic offering patch after all.  In fact, I don't have a clue what it is linked to, because I can't find any hacks I applied around the time the problem first popped up!  I looked at all those code banks you suggested, and the only one that looked different from a vanilla ROM is C22A0B-C22A1B.  However, when I reverted this code back to the original, it did not fix multi-target issue with the offering as I thought it would.  Now I am even more stumped!