2002 x19 200 merc. 2.5, 10" bobs action jack, 25p tempest A45, at 6" below pad top speed is 55 wot, if I raise the jack just a hair it over revs. Have tried 25 tempest plus with same results, at 3 1/2" below pad top speed is 49 mph hitting the rev limiter,soon as it comes out of the hole its hitting the rev limiter with lots of pedal left, the thing hits the rev limiter so easy it's not funny! Prop is new old stock