Anybody use Origin live psu on an LP12 ?

I have been using the Advanced psu with upgraded motor for well over a year , but about 8 month ago I noticed a slight speeding up of the motor/platter especially with quieter music passages. ( this was more pronounced after fitting Ittok)
Any ideas as to why , I've moved psu as far away as possible from TT to no avail.
Help or advice needed as I do not want to send back to manufacturer.

Seemed to happen mostly at end of 2nd track start of 3rd , now getting worse.

chezi.
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http://i17.photobucket.com/albums/b85/chezi61/DSCF0397.jpg

 

i'm

afraid every single origin live powered deck i have ever heard has done this and when strobe is used to check speed you can see the fast/slow effects. i think the load on the motor from the belt is wrong and causes this effect.
i'd go back to a well regulated a/c motor on the linn.

 

personally, I prefer the sound of ac motor turntables, dc motors make them sound like cd's.