Hello, I experience some problems with the left platter. When I use the platter by acting on the upper surface, the track is still moving slowly (as when I touch the platter on the side).
This is not always happening: sometimes the platter is working properly, sometimes not (and I was not able to debug the issue).
I’ve seen in other topics the problem can be related to dirt of the platter capacitative surface. So question is: how do you safey clean the upper surface of the platters?