Im not pleased with this kit so far I can only get 70.9 mph and its only 70 deg or so the water was flat and cold.
i am hitting 8150 rpm. but having a porpising prob. when it sits flat it goes 70 to 70.9 every run with a full tank and with 3 bars left
Im thinking of removing the wedge or is it in need of a repitch on the brand new impeller with only bout 2 hr on the stage 1 impeller 14/19 I think

Dave at Impros says that the out of the box Solas impeller is very inconsistent so there is a very good chance that your impeller is out of whack. A repitch is a very good idea!

By the way, most people only see 71 with the Riva Stage 1.

With the wedge you will find that you will porpoise if trimmed up too high. Try trimming down a little more and that should solve your problem.