I don't have that mount but I do have the ASIair plus and also had BIG guiding problems .
My mount in RA was "sawtoothing" , (see picture) going wildy from one direction to the other and the DEC was trying to keep up in a wild fashion as well .
If you look at the picture below of the guide settings , you'll see three settings .
Calibrations Step 10000 ms
Max DEC Duration 2500 ms
Ma RA Duration 2500 ms
My guide camera has a 500mm focal length so my settings will be different to yours , but my Calibration Step is now set on 500ms , my Max DEC Duration is now 50ms and my Max RA Duration is 5ms .
Upon playing with these settings I noticed an instant settling of the guide graph but still not as good as could be .
There was another problem , the blue line (RA axis) would also just suddenly go off screen . A friend on here (PaulSthCoast) reminded me about keeping my scope "east heavy" or "west heavy" . This stopped the blue line from departing the screen .
Check all your cables and tie them all down to the scope , (cable management) dragging or sagging cables can cause big problems too .
You will also have to check your backlash . There are youtube videos on tightening your mounts gears to reduce backlash .
I had to sit with the mount multiple nights and adjust the settings to see what would happen .
I have used mine as a backup to my CEM26 a few times and although I am very concerned about the clutching capabilities it did work well with my AA+ ... in fact got down below 0.5 a few times and very impressed ... and flawless goto. But not holding my breath on how loose it is (a refurb unit btw from ProAstroOz after sent back from iOptron for upgrades, apparently)
