I don't spin so take what I say and use it as you may... my husband (who works with wood, clay, paints...a jack of all trades kind of guy) says he'd use silicone. If nothing else is working that may be worth a try.
That said... I just checked and there is a group on Ravelry (it's free to join and worth it for patterns, etc) that is for users of Kromski wheels! I bet they'd know or could direct you there.