I haven't had my mount for more than a year, and it's always had a stiff/sticky RA + Dec shaft which makes balancing more or less guess work. I'd like for it to be fluid, but I can live with it for now.
The main issue I'm currently having (of which I've noticed some months back but it disappeared) is there seems to be a knot in the RA movement near meridian (horizontal). With clutches released, I can feel what I can only describe as the bearing catching on something internally, like a burred edge / grit in the bearings, or the RA shaft collar is deformed as is catching on the shaft. This effect is most noticeable when moving the RA slowly.
The effects of this issue results in the inability to guide. PHD2 struggles to calibrate in west (stays still, sometimes shifts east). Balancing the counterweight west-heavy does not solve this issue. If I am able to get a successful calibration at a different area of the sky, the RA can not correct its east drift.
The mount was working fine a week ago - the only thing I can think of is that I may have bumped the mount with the clutches engaged and it caused the clutch bolt to scrape on the collar. I figured I best ask here before I break down the entire mount and examine the entire assembly.
As per the first sentence, does anyone have any recommendation as to how I can eliminate the shaft stiffness for balancing?