Thanks for everyone's help with this, I really appreciate it! I bought a pretty cheap NOS Astatic 81T on eBay to see if that is the problem - it won't be here until Monday. I've checked the tracking force and it is around 9 grams. I'd like to try to get that down. I've attached a picture of the spring in the tonearm. It doesn't appear to be adjustable, but maybe I'm missing something.
