I have frequently used Alpha pots for my amp builds and been happy with the results. But the particular Alpha pots that I get from Mouser and other sources have a 5/16" x 1/4" bushing. Sometimes, the 1/4" length of that bushing is not sufficient (panel plus chassis can approach 1/4", and then there are no threads left for the nut). So, when you need a longer bushing, what pot choices are there, and who can I buy them from? Obviously, I'd rather not start buying pots that cost $12 each since I am used to $1.50 each, but if it costs a little more, I'll certainly deal.