Quote Originally Posted by Roberts_Clif View Post
Not saying this is your problem though.

This is exactly what I get When my Lead-Screw Couplers are turning Untrue.
I find the by placing a single wrap of electricians tape on the end of lead-screw that is inserted into coupler, this will allow the lead-screw to spin True.
Can you remove the lead screw on a Prusa? I thought it was attached to the motor. Also could it be the trapezoidal nut? The right one has the slightest bit of vertical slop if I lift it.