Just got my Tempest back from mark,It was a real POS from the get go,no lift and no top end. Ran it yesterday and it ran 6 mph faster than before.I know this is not the case with all props ,but Mark did wonders on it.And now it is 2 mph faster than my turbo at 100 rpms less .It has a ton of lift ,good hole shot and real good top end.I did not play with the plate ,so I might even get more out of it.I dont think it handles as good as the Turbo (the turbo just seems to take waves a little better)
Ill play with it and see what happens at LOZ ,but speed it is faster.
It was well worth the 225.00 to get it rolling.Now you might not see this big of a difference ,but if you dont have any lift than Mark be the way to go .