Ok, so I bought a Jimi Hendrix Wah pedal a while back and I have a few questions.

-First off, its an old one. I don't know how old, but its not like the new ones. It doesn't have a battery access cover on the bottom, the whole metal back must be removed to replace a battery. Any idea what time period this is from?

-Also, when I press down on it, sometimes the pot falls out of the slot. I've tried tightening it, and that worked for a while but not permanently.

-Any sugesstions about where/if I can buy new pots for a wah that would sound good? Is it even worth it?

Thanks so much for your help!