So long story short, I made some siege machines in blender instead of using a tank, but the code is mostly the same.
When I finished that last lecture I couldn’t figure out why my ballista wouldn’t turn left or right. I messed around with the locked, limited and free constraints to no avail. What ended up working was applying more force to the driving wheels of all things. Anyways, I just wanted to share in case anyone else ever runs into this issue. God bless y’all!