AZ GTI mount stuttering when aligning!

[Andrew stuart]

Out last night to photograph C/2022 E23. Everything set up however when I went to start alignment choosing 2 stars the mount was stuttering and in fact reversing on final fine trim. I’m using SynScan Pro on iPad. Eventually got it and then connected Luminos Pro which worked a treat. Has anyone else had the AZ GTI mount do this. Thanks in advance. Oh and the mount was clicking once fixed on the comet. 

[Ratlet]

Was the comet quite near zenith while you were imaging?  I had mine click near zenith the other night and I think it was because my balance was off.