Richard, not after drift aligning, but after a Synscan 3 star alignment. Even during the alignment routine, the stars are drifting quite noticeably in the short time on each target.
The R200SS is balanced that was because it usually has a whacking big 5D Mk II DSLR hung under it. I took the DSLR off for the photo
I have used the R200SS all of 3 times, and never was there a balnce issue. THe scope I use on this mount is a Vixen Fl102 refractor, which is always perfectly balanced - I even had a small adjustable counterweight custom made to do small adjustments.
I suspect the dec is not slipping or falling, but is being incorrectly DRIVEN as Merlin66 also suspects. I tried a PEC correction even, but that failed miserably - could not keep it centred.
I just tried a push and pull test on the axes all clutched up - NO movement, though I was NOT going to push overly hard either.
As Tasco said and Ron at Sirius, motherboard - motor controller failing or corrupt "driver" in the handset.
Time will tell.