"Keeping it accurate is an ongoing process. "
There are, however, several steps that can be taken to ameliorate having to tinker continuously. Make sure the belt and belt path are scrupulously clean; be certain the table's bearing is clean and properly lubricated; be certain the table is level (this is a must); try to maintain a constant ambient temperature in your listening space - believe it or not, the viscosity of both the bearing and motor lubrication change considerably over a relatively small temperature range. I'm sure there are others I am neglecting.... Good listening,
-Richard