Thank you GEdward and Ger21
I have torn the machine apart and spent all day cleaning grease, grime, sawdust, rust, etc off of everything.
Getting it put back together slowly.
No pitting in the lead screws. Everything seems to be straight and true. No bends.
Think I figured out the binding issues. Combination of the framework not being level, guide rods, lead screw nuts and lead screws packed with grease dirt grime sawdust etc.
Need to reassemble, but everything so far slides and rotated smoothly within the guides and plastic lead nuts.
The lead screws have 5 starts, 1/2(.5) dia.
Once back together I will change all motors to 50 vice 120 and see if that helps.
Wondering if some of the notches made across the arcs were due to binding/ sticking along the guide rods and screws. Didn’t think that the case since the machine was moving smooth within the project range.
Lead screws are not in bearings, only setting in plastic coupler/ holes. I tried attaching pics but they will not attach via my phone.
This is the third time I have sent this message over the past 14 hrs. When I try attaching pics the whole Med disappears.
Will let you know what happens once I get everything back together.