I dismantled the DEC once to tighten the slop - tricky but very doable - the motors and gears are hard to remove to get to the screws.
There is significant difference between an Orion Atlas (eq-6 variant) and the much larger Vixen Atlux!
Right now I am trying a 3 star align (which even in polar aligned mode) should run the polar mis-alignment routine in both motors to correct for pointing error - will know in 100 minutes if its helped tracking rate at all!
* * *
Well no - not with those alignment parameters - dec drift now - arg.
Iteration 2 manually set the 3rd alignment compensation drift parameter from 000 to -005 - halved the drift! Onto something here - set it to -010 next - bit less drift again but this time in opposite direct so tomorrow I'll try -008, its about 3 star diameters an hour drift at present - if I could get it to 1 or less I'd be ecstatic!