man I just looked at your bike, sweet setup! I'll have to try it with a bit less air again. I had it quite soft at the start, it felt wicked but i found myself scrubbing jumps super low - it was hell fun like that though!!
na, the frames are all the same but th fr30 has standard dropouts. the 20 and 10 have through axle dropouts which are meant to be better. You can change the dropouts quite easily anyway.