The Sanwa GT-Y, it is actually the only octagonal gate for Sanwa joysticks.
There is only 1 octo gate for the JLF, The Sanwa GT-Y
Go Square gate
try this gate u aplly it to the on on ur te u pop out the square part and put that 1 in there is on 3 gates stock square, this 1 , and the octo gate
Or just get a Seimitsu joystick with an optional restrict gate instead. XD