thlewe72---The lead screw is easy to change. Just pull back the spiral cover at the left end of the shaft and punch out the brass shear pin, then close the half nut on the screw and use the carrage to supple the force needed to extract the screw from the coupling. Also you need to be sure you have about 4 feet of clearance on the right side of the lathe to allow the screw to come all the way our.