 Head buzzing
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I have a Hartke LH500 head with the HyDrive HX410 Cab. When I play a low B-Flat (especially with boosted lows) the head buzzes from vibrations. When I placed my hand lightly on-top of it, it would stop. Now the head's in a Gator 2 Space Rack Case and it still does this. I couldn't tighten the screws at the top of the head any more. Any suggestions on how to fix this? | 
