Shim for Torin BigRed (4 ton) cable puller

This "come-along winch" from Menards has a two-to-one reduction pulley. The cable can jump the sheive and get jammed against the side wall. The spacers take up the excess space, keeping the cable on the sheive. I used PETG because it is slippery. 

In case of a tight fit, scale down in Z.  The shim is 1.6mm thick. Print two pieces.