Re: Push/Pull Pot Too Stiff???
There are a couple online vendors that carry the push/push. Warmoth is one of them. Personally, I think most push/push are junk. The ones I've had have all had the plastic spring retainer break over time.
Don't know what to tell you about the stiff push/pull. White lithium grease should work if you can tell where the switch is binding and lubricate it.