Ok, this may help or likely not.</p>

Back in the early days of the P-70, I had a similar problem.  Even had a flame out on the ground during takeoff at a meet because of it.  I was told by JetCat the problem was caused by the fuel needles not being shaped correctly and/or positioned incorrectly.  They thought it wouldn't happen in the air but it did and so does a P-120SE I'm flying now.</p>

John Redman eventually fixed the engine (when I got around to sending it in) by re-bending the needles and such.  Don't know the specifics but since he owns the place now, you might call and discuss your problem with him.</p>

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