Levinson 326S Volume Knob Loose


I just purchased a used 326S preamp and noticed that the knobs for input select and volume are loose and can be easily pulled off. It was cold when it was delivered so I thought when it warmed up it would be better which it did help a little bit, input select is now snug, but the volume knob is still pretty loose enough to slip on the main axle. I also noticed that the brass axle drum is shallower for the volume than for the input select, is this normal? 

Anyone else experience this?
Thanks 

agbrace

Showing 3 responses by agbrace

There is a brass drum attached to the main shaft and a spring loaded ball bearing that should apply pressure to the inside of the knob so maybe it has just lost its rebound but wonder how to fix. I suppose could put some electrical tape on the inside of the knob to make up for the difference but don’t like cobbled solutions. 
 

@ellajeanelle Thanks, the plumber's teflon tape was a great idea. A single strip around the brass drum allowed the knob to slide on smooth without too much force and holds it perfectly.