Originally Posted by mmwalters

Dreamboater With a good setup slip factors in single digits are possible and 10% would not be out of line. I had the same situation as you regarding the rev limiters on the promax. I had Rapair bump them to 6700rpm. Picked up a couple of mph so far, maybe more is left with the prop work from throttle up I have not tested yet. I will let you know

Originally Posted by dreamboater

You wouldnt happen to know a Rapair Dealer would you? So far my slip has been 11% on my best run with gas. I am pretty sure it will end up right around 10%.