2015 Mojo Auto Surf

Yesterday I used the interlock release so I could increase RPM’s. Only would increase moving the handle forward using the interlock release button.
Today, lift collar and won’t move forward or back. Interlock release still works but again, handle only goes forward for that.
At transmission you can see the cable tip jiggle when trying to shift. Feels like the collar isn’t fully releasing to allow the shift. But it does for revving engine.
Anyway, any ideas? Anyone know how to disassemble the shifter? Diagrams? Any help is welcomed.