Mastercraft Maristar VRS 225 Ski Wake Surf Boat

1993 Mastercraft Maristar 225Direct drive with 454 Indmar enginePerfect pass- Ive never used or set up but have the manual 1020 hrsIve had the boat for 5 years and have put on 120 hrsA solid boat composite floors and stringers from the factory so no soft spotsI have the ski pylon- will go with the boatNew stereo receiver- 4 interior Sony marine speakers10" Infinti Basslink subwoofer2 JL Audio tower speakers with ampBig Air tower bimini topIve recently done many upgrades-Transmission rebuilt by Ace Transmissions in Torrington CTDamper plateTransmission cooler and linesAlternatorNew Steering CableOJ 13x13 Propellor Cutlass strut bearingDripless propellor packingStarter with solenoid Davis United- Electronic distributor, cap, rotor Spark plug and wires2 exhaust manifold and risersThermostat 2 new bilge pumpsNew gauges 1 piece mooring Sunbrella coverNew Johnson raw water pump I've done a few cushions at a time and have rolls of the red and white material to go with the boatKaravan dual axel trailer with 2 new tiresFull disclosure Boat could use carpet and cushionsHas a miss I cant find the cause of in the 25-30 mph range only happens under load doesnt happen out of the water running on the trailer. Probably a carb or fuel issue