thanks for your fast reply
the exhaust is a bcm pitts muffler. the high needle is set just a beat before the lean setting. if I lean it more then there is a prm drop.
if you see the prevous posts, I use a new ignition.
What makes me most unhappy is that the engine is unwilling to start and the a DL-50 I have works without loosing a bit, starts at second flick and costs 1/3 the money...