S&S concert wheels

[Leif Olsen]

Hello Mr. Mark Cramer.

> 
> The locking mechanism on one of our D's concert wheels is stripped, and the
> remaining one seems like it's on it's way there too.  The symptom is that
> the knob gets tight but never locks the wheels. 

Have you tried to lubricate the tread connected to the knob ?
-- 
Pianoshop Leif Olsen
D.P.I.F. Denmark