Originally posted by glowplugboy
The set up is in an Entrophy, with Hyde style soft mount OS Max "F" plug, and Graves Pipe.....
"F" plug? Sounds a little hot for the application though I will admit I do not have experience with this particular engine. Wouldn't one of cooler Rossi #7 or #8 or even an OS #8 be a better choice for your Webra? Everything you list as a problem points to detonation which is usually caused by too much nitro or too hot of a plug in a high compression engine.
Just a thought.
John