Having an issue trying to figure out how to keep a piston from traveling too far from the base. Have a concentric mate with the piston guide, mate from the guide to the top of the piston with the max distance set, and a linear coupler from the piston top to the set screw that pushes it down. What am I doing wrong?

It will let follow the set screw down and up but wont let me rotate to the other side ( any further than the piston is allowed to go up).

Very new, self taught, so sorry if this is super simple, thank you.