H2x
 

The h2x is new to me and has a new engine. I just launched it for the first time, I idled it for about a quarter mile then rolled the throttle up to get on plane. Before it planed it acts like something is slipping The bow drops down I idled back to the ramp. With the drive down and boat in gear I jumped up and down on one blade of the prop to see if it would slip no . The engine is brand new 489 in. 468hp 569ft torque bravo one drive as 3 blade 23 pitch any ideas

Sounds like it could be the engine coupler. Any burnt rubber smell or rubber shreds found near the transom?