I have been running a 1224 for over ten years with no problems. Recently the one inch dies have been putting out inconsistant, torn, and even crimped threads. 1 1/4" - 2" work just fine. Here is where it gets weird....A Rigid Compact 300 machine runs a perfect thread on the one inch pipe, and it's all the same brand of pipe. I have changed dies and cam plate. Finally got tired of it and bought a new die head. Still had the same problem. I am officially stumped!! Any ideas out there???