My 4-20 pot is giving me some troubles, and I'm wondering if someone has some experience with this issue:
On the top lip of the pot are a series of hex head screws. There is also a shoulder bolt (which is aactually a shouldered hex head screw) that guides the valve arm assembly. The holes that these screws go into are all stripped.
Of greatest concern is the shoulder bolt. Since it is suppossed to keeps the valve arm assembly moving straight up and down, it has to remain screwed down securely. In my case, the shoulder bolt has nothing to bite into and wobbles...thus the valve rod fails to close properly.
Anyone know what I can do to fix this? Is there something quick and easy I can inject into the holes to anchor those screws (must also be able to withstand the high heat). -- OR should I send it back to Lee?
Thanks, Jon