A very low platter/subchassis setting can often cause wow.
Reason: A 12″ record is a larger diameter than the platter and the wow comes when the record touches the
surrounding surface – gradually increasing as the tonearm and carriage move inwards, shifting the subchassis’ center of gravity.
First tracks play fine, later tracks not.
The solution is to tighten up the suspension a little at the left/rear.
Don’t overdo.
Make sure the subchassis is still able to move freely.
Martin
