Aluma AC4040/FW7/SC3-long/AP1600 GTO/CDK17/Maxim V6.26. Got the system installed and up and running, finally after figuring how to bolt it together (thanks Doug). The Aluma Pinpoint tells me is PA 0. Got the SC3 focused (I think pretty well). Scope pointed to east sky, calibrated in Maxim, got some 40 pixel movement. Started guiding in ASCOM direct, binned 2x2. In RA, continuous oscillation, would move the star from one side of the guider image box to the other, the guider graph showed a beautiful sine wave pattern, with large amplification, guided images useless. Also guider graph showed almost constant corrections in RA. I calibrated several times. DEC looks fine. Worked with guide exposure, aggressiveness, delay after correction, nothing helped. Tried using guider relays with guide cable, same thing. Seemed any setting change and subsequent calibration didn't do much. As a note, just the night before and from time immortal, my trusty STL6303E with internal guider worked just fine. *Could position of pick off mirror cause this (I may need to move this out a bit more from current)? *Could the cover be on the mirror (saw this in previous posts)? How does one tell? *Although I believe I have the latest drivers, is there perhaps a special ASCOM driver needed or something? *Are there some unique settings that I am not aware of for the SC3? In other words, does it like A or B setting? *Does how the SC3 is orientated make a difference? In other words, does it need to be "flipped" 180 degrees on mounting to the FW7? I don't know how this would make a difference, but maybe it is "reversing" itself? I have no idea.