1974 TRIHULL WITH 1974 JOHNSON 70HP<br />RUNS GOOD .EXCEPT WHEN YOU GIVE IT FULL THROTTLE,THE REVS ONLY GO SO HIGH,AND THE BACK OF THE BOAT STAYS DOWN,AND IT SOUNDS LIKE THE MOTOR IS BOGGING DOWN ,FRONT END WAY UP.COMPRESSION IS ALL AROUND 125. EVERY TIME I START THE BOAT I HAVE TO USE THE CHOKE...