Only just noticed they're not there in imame4all on my 3GS, despite the fact I'm running a 100% complete rom set. However, many mame4all ports had very minor alterations and hacks which mean I've had to alter the rom set on my iPhone, Wiz, Dingoo and PSP to get certain stuff to work. The main reason is that support was added for some later roms in some ports, so I had to hand pick roms from many of the other 0.37 variations (such as b13) or even some much later ones, but I'm afraid I never kept track of which ones on which platform so you'll just have to persevere.