Hi, I've been making a headshell for my 2c+ because the combo was hurting my back too much going up and down stairs to gigs. When I've taken the chasis out and inspected it i found a screw that's loose, thread partially stripped so it doesn't fall out but doesn't tighten. It appears to be under the output transformer with the head on the inside of the chasis so it seems to be going into the transformer. but when I look again there's no hole in the transformer to match this screw. Can anyone explain the purpose, significance of this screw and what I should do about it. I'll post a picture once I find out how.