If it's weighed down, we won't be able to plane out and get to a cruising speed. If it's just me and a few two others, it'll slowly accelerate, but eventually get to an okay wakeboarding speed.

The engine revs easily to 5-6k rpms in reverse, but under load in forward, it struggles once it gets to 2000 rpms.

I initially thought it was a fuel delivery problem, but since it works fine in reverse, I'm wondering if it's a problem with the butterfly valves on the carb, or the throttle cable itself.

Has anyone seen anything like this on their boats?