That alcohol will clean the pot but depraves it of any lubricant.

I use this stuff:

https://www.learchem.com/products/acf-50.html

I soak my new pots in it as they tend to wind up in corrosive environments. This stuff protects them and adds a lubricant layer much better than what they come with.

Yeah, what Mark said. Also, an A prefix is "Audio taper" and B is "Linear taper".