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Old 06-23-2015, 08:49 PM
  #7  
Gray Beard
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Join Date: Apr 2003
Location: Hemderson, NV
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Never had a glow plane do anything like you have described, did have a scratch built giant with a gas engine that had the stab bouncing like a BEE BEE in a box car at idle but that was just a combo of design and the engine used.
I don't use Mono, in plastic covering it is either Ultra or the Chinakote. It could just be the covering isn't tight enough or some odd thing like that?? Good luck with it.