my bad. I must have misread some of byuu's posts here, and I while I was traveling I wasn't able to follow the discussion on bsnes board.
I'll take a look when I can.
in the meanwhile, both r-type 3 and super kick boxing have sprite issues. my first series of OAM updates won't fix them (even if they will finally implement proper sprite limits in MESS), but I'm looking for a fix. hopefully, I will find it soon