If you are not using a record clamp you might want to get one. Perhaps vibrations being induced in the record itself, as distinct from the platter, are throwing the stylus out of the groove. A clamp would presumably help that.
Also, although I realize that you have checked the tracking force, if it is not set at or near the upper limit of the range recommended by the cartridge manufacturer you might try raising it to that point.
Regards,
-- Al
Also, although I realize that you have checked the tracking force, if it is not set at or near the upper limit of the range recommended by the cartridge manufacturer you might try raising it to that point.
Regards,
-- Al