Try cutting/spliting a 8" or so, some what under size soft wood dowl about 3/4" down.....a hack saw blade works great for this, from one end, wrap.....using split to hold cloth, a small strip of coucus (sp) cloth until very tight fit in chamber, from the back of course....try spining it with a drill and only polish a thousands or so of the chamber....works all the time
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