This one says I can customize but , I never can mod a stick? link here https://www.amazon.com/Mayflash-F300-Arcade-Joystick-Switch/dp/B019MFPLC0/ref=sxin_1_ac_d_rm?ac_md=0-0-bWF5Zmxhc2g%3D-ac_d_rm&keywords=mayflash&pd_rd_i=B019MFPLC0&pd_rd_r=7ef678cd-8a32-43cc-afd0-0e1de179370d&pd_rd_w=M7scA&pd_rd_wg=Xdg2M&pf_rd_p=2938a786-9bec-4d37-8c06-456e3edce5d1&pf_rd_r=WBHNYGRRE8W15RY151RV&psc=1&qid=1571982472
I have a very similar Mayflash stick for Switch. I haven't tried modding it yet, but what I was planning on doing was just buying a new joystick for it. I would recommend you buy a joystick piece that already has the gate you want.