1. there is no free play
2. Clk / DIR from the spinner must be connected to Jamma 20 / 21.
3. the jumper J3 must be set from joystick to spinner
have fun.............
every ensoniq needs its own personal voltage, which is set and sealed at the factory (glue bal).
if it is adjusted, the ensoniq can be destroyed very quickly.
but then it is completely dead,
so your problem comes from somewhere else........