Gate replacement on the hori


so ive spent he last hour reading up about gate replacement with the sanwa gates and all i can find is walkthroughs with full joystick replacements and buttons etc.

I have teh Hori EX II for my 360 and i can’t for hte life of me throw off consistant QCFx2 supers on it.

charge supers are a breeze however, but i am more of a QCF character user.

so my question is, can i replace JUST the gate?

specifically the Sanwa GT-Y Octagonal Restrictor Plate.

also, what thread is the joystick? will a LB-30-N fit with no problem?

thanks in advance!