Just disassembled things to install the ground wire terminals which connect the tone arm, spindle and motor. What a pain, spilled spindle oil and had to clean the whole thing again. Did a little more involved set up check since I found more of my tools. I shimmed the scale so it measures at about record height. VTA was “eye balled” and looks pretty close to me, maybe a tad high? Alignment is way out, the tone arm has to move closer to the spindle. I’ll adjust that next. I have to read the manual again about the anti-skate and other adjustments.
There's an app for smartphones that measure rpm. I don't know how accurate, but should be close. I notice the jerky motion too. You said you saw it working but could the belt be a little stretched or something? Whatever the problem, I doubt its serious.
Well darn, went to bed real early yesterday so looks like an early start today. Pulled the sweep arm off and the original ferrule was still there. Measures 5/16 OD. Looks like the hair was glued in. I think I’ll try to cut down a 7.62 and use the bottle neck as a little funnel to get the hair into the original ferrule then try crazy glue. If that doesn’t hold then I’ll split the brass and use the set screw to clamp the ferrule closed I think... gotta fix Linda also but I think I’m gonna need parts. I doubt I’ll get them with coronAIDS messing up shipping.