Hello again Kale, I have a procedure question for you. On one of my BA-3K's the volume pots are VERY stiff, I " think" due to bending on the shafts. SO I noticed on your AU-20K restore pix you ( grind, file, do something ) with the swedge to hold the wiper on the shaft... I think if I could get them apart I could do a SLIGHT ream and polish out. My pots still work and IF I try to repair the mechanicals.. I don't want to break it. Could you offer any advise on the proper take apart? I can't find replacement pots that have the correct thread, or if the thread is correct it the wrong taper, or the shaft is wrong... HELP... Thank you! Mike