I am looking to buy a couple of Belleville washers to tighten up the speed adjustment knob on an old Powermatic drill press and add some resistance so it will not wander as it runs. The ID is 3/4 or slightly bigger. I can find them if I buy a container full or maybe even 100 but 1 or 2 should do the trick. I only know they exist from reading about them here, so I thought maybe one of you all would have a source. I know the Boss doesn't like off topic threads but this drill press is for my gun tinkering hopefully he will let it slide. Thanks Mark