Aluminum tape shims were added on low pressure sides of slots and has held up well.I´d rather be concerned that the high pressures that wore down the aluminium sideplates and "anker pieces" will go through the soft aluminium tape quite easyly.
I now suspect that load cell base plate slot slop was from original fabrication tolerances;
no obvious evidence of mushrooming or fretting...
I acquired PT2s used, lost motion may have been there when new.