| Chris:
I'm afraid if the pointer on your tach was doing donuts then it is probably 
gonna need more than just a cleaning. The hair spring is designed to make 
only one complete revolution before it starts to kink and eventually 
self-destruct. What usually causes this, is the bushings get worn and then 
the drag plate comes into contact with the magnet assembly and poof....rats 
nest. They are repairable, but the hair spring will have to be replaced. 
(After you readjust the drag plate to make up for the worn bushings.) I have 
a couple of body bagged tachs and speedo's, so if you need a hair spring then 
email me off the list and I will give you one.
Good luck
Jon
Huntington Beach Ca
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