2016 721 pro xp, no poles 250 proxs. Runs 72 ish with a 26 fury at 6100 RPM. Tried a 26 Temptest plus and ran 63 at 5700, and the Temptest blew out really bad. Both my fury and this Temptest had half plugs in the vents. My question is what prop is best to get some top speed and a whole shot with less blow out? is there a 4 blade that will run 70's?