Now that I've finally finished the task of scooping all the honey out of my tonearm reservoir and setting out ant traps (if you're not aware of my experiment, please don't ask) I'm on to the task of getting my Oracle Paris up to proper speed. Here's my issue: as measured with the rpm app on my phone every revolution or so the platter speed goes up and down from 33.1 to 33.5 consistently. I've tried it with another phone and the phenomenon is consistent. I've just installed a new belt and cleaned all surfaces the belt contacts. I'm thinking it could it be the motor- the speed controls seem to be functioning properly but don't effect the variation in speed, they just slow or speed the whole process. The motor pulley looks to be straight and clean but might do with a polish. Has anybody ever seen this before?