thanks Hogrider, I think I'm close and its working, I wished I knew why it changed or what happened to cause the issue so I don't make the mistake again, as far as the manual I'm really disappointed in the quality of detail. I had nothing to show me how the unit goes together or should be set up, I would have thought there would have been a trouble shooting guide for common issues, luckily I have a little experience and understood the concept, I re read the instruction again this morning but its not clear, from the instruction on how to set the arm.
thanks for the help and the schematics