Anyone know where I can purchase spare parts other than from Orion? (I have contacted their support but it's been a few days now and all they say is that they need to get a reply from "purchasing" to confirm if they can order me parts). Strange, I would have expected them to have some in stock. I did buy the mount new from them in 2015.
I recently discovered with PEMPRO that I have a strange 3.9x fundamental oscillation in RA. Banging this around in the PEMPRO forums it has been suggested by Ray and others that I likely have a bent axel on the motor. This fits as that small drive gear is 12 tooth and spur gear is 47 tooth.. hence 3.9x.
I performed a belt mod and hypertune a few weeks ago to see if it would help, and I have GREATLY improved my DEC guiding, but I'm still dealing with that oscillating PE. In the belt mod, that drive gear was replaced, so that suggests the axle is the real problem. I have not checked yet to see if that axle is removable, but if not I can replace the entire motor. So... just need to find parts if Orion doesn't come through.