I have a Gamma Progression 2, the new model is 602 FC. Last few times I strung my clamps are moving a ridiculous amount when I do first 6 mains or so. I am talking like moving 3". So I decided to take apart and clean bases and rails still no luck. Machine is probably 20 years old. Any thoughts on what else I can try? Think it might be time to bite the bullet and but a new machine. I also looked at Gamma website to price new base clamps and don't even see any.