The volume pot is the most used mechanical part of any old radio. I try to get spare vintage pots on fleabay in 1 Meg, 500K, and 250K regardless if their is a on/off switch on it. You can open them up and replace the semicircular carbon track if worn out and or the shaft which holds onto the wiper which can get bent or broken and eat into the carbon track and eventually break it. Like a boy scout be prepared. Hope things work out for you in this crazy hobby.
