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Old 13-11-2008, 01:33 PM
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rmcpb (Rob)
Compulsive Tinkerer

rmcpb is offline
 
Join Date: Jan 2005
Location: Blue Mountains, NSW
Posts: 1,766
You could try a speaker magnet with self adhesive felt on it. Just plonk it on the tube and move it till the tube is balanced.
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