I have a Lyman case trimmer that trims slightly off square. I have tried contacting technical support at Lyman and just get an answering machine telling me to leave a number but they have yet to call back (trying for over 3 months now). Anyhow, I'm just trying to find out which part of the trimmer I should replace to get it to cut square. Should I replace the piece that holds the shell or the rod that holds the cutter. Probably an easy fix but I hate to start buying parts and find out I bought the wrong ones. Anyone else have this problem? Any recommendations on how to fix this trimmer? Thanks!