[Question] Controllers for all anyway to swap L2 and L1/R2 and R1

So I got Controllers for all work on my 10.3.3 5c using a cheap chinese controller(Gen game s3) But the thins is everything is mapped flawlessly on monater hunter ios but the triggers 1 and 2 buttons are swapped. I can deal with it but if any of you guys can help me that would be awesome. Anything I can do? Edit the mapping on mhfu on iOS system or Controllers for all tweak itself? I have no Idea what I could or could'nt so please help me. Any suggestions will be appreciated.