Sorry for the delay, I had to fab my wind turbine tower and get it put up. I had several major projects come to a head at the same time.
Anyway,,,,
I'll make a test program this evening to test repeatability. It seems to me that if I had a scaling problem, I would see geometry errors in both negative and positive y. IE, an elipse when I program a circle.
The machine is only creeping in the +y position. I think it may be the cheap encoder that I bought picking up interference?
More later.
Thanks
i_r_machinist