Not the worms Brett but it looks like something in RA is catching, I'll have to pull it apart again I guess, might just be a worm roller bearing. I plugged the handset and guiding cable in instead of eqmod and I could see it drifting at regular intervals, almost like a step function. I also found that the RA drift was being recorded by PHD when it was calibrating DEC which is why both lines on the graph where doing similar things. Looks like rain for a few days anyway.
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