Teflon washers for cart, were can I get these?

Try McMaster-Carr. FWIW, I've always preferred the sound with metal washers.

Agreed regarding source of Teflon washers, and the superiority of stainless steel in that application. Most metal washers are stamped, and hence have a perfectly smooth side to them, which should face the headshell - the other side has a slight raised ridge which you can feel with your fingernail - this side faces up.

Now there are no absolutes, and I encourage you to try everything, but in general, Dan, Palasr and I have had the same results.

While you might be able to tame (or mask) some other problems in your analog rig, my bet is that you'll prefer brass or stainless. McMaster is a good source for a lifetime supply of all varieties.

Cheers,
Thom @ Galibier