Well, pump is in and cranked her up in the back yard, got the low and high end set pretty well but can't figure out what's going on in the mid range, wants to load up real bad, now i did order an APC 15X4W (someone suggested) and this is the prop i was trying to tune it with, it will only turn 9800 rpm, could this prop be to much and making the mid range act up? did not try my zinger 14x6 (prop i been running, will turn 10500rpm) and ran fine at mid without pump, will try it saturday sometime just to see if the APC is to much.