Lou55,

I just re-read my post and it did sound like I was picking at you. I can assure you that was not the case

We are at 472 feet where I fly at and in all cases up to this point I tried the tube crimp, pump thing and larger line. In all cases the larger line won out for me using the Brisson muffler. I've even heard of guys stuffing a bit of steel wool into the muffler to help it increase back pressure and I can see how that would work but I personally have never tried it.

I thought Aussie was installing a DA50, I was a bit surprised when he asked his last question so it kinda through me off guard a bit.

BTW, the RCU expert (Marc Vigod, ie RCAdmin) that did that review created a post no long after that saying he opened the tube and ran bigger line because he could not quite get the power out of it he was expecting and ran into mid range issues. This was on the review of the GP Gene Soucy Extra