[Phono-L] Repairing a fiber gear

[Bob]

I'm restoring a Thorens Excelda.  I've got it running pretty well but am having a severe problem with wow and flutter.  It's so bad that it makes listening almost impossible.  The records appear to be traveling at a consistent speed but there must be minute hesitations that are impossible to see but they surely affect the sound quality.  The mainspring is plenty strong so that's not the problem and the reproducer sounds fantastic on other machines.  The problem appears to be caused by excessive wear on the fiber gear that mates with the worm gear in the governor.  A friend suggested I clean it and try to build up the bad areas with JB Weld.  I'm afraid to do this because I think it will be very difficult to control and be irreversible if I do it wrong.  I've been thinking about cleaning all the grease off of it and checking over for defects with a magnifier.  If I can see areas in the gear thread that are raised I will smooth them out with sand paper.  To try to build up any areas that look low I will paint on some lacquer or urethane varnish.  As I mentioned earlier, the turntable appears to be rotating at a consistent speed so It shouldn't take much to true up the teeth enough to work properly.  I'm looking for second opinions on this technique or any other technique that you think will solve the problem.  Thanks