Well, I've been troubleshooting/wrenching on this motor for the last few days.
Finally got it in the water and took her for a test run. I could not get the engine to rev past 2800 rpm. If I tried to give any more throttle at that point she just bogs-down and threatens to stall.
If you bring the throttle back to idle the motor quits almost instantly. The first time I tried to restart... she started right back up.
The second time I tried this little experiment I couldn't get her to start again and ended-up paddling home

.
It sounds to me like a fuel issue, but the carburetors were just rebuilt last year. Any advice would be greatly appreciated (I hope I've provided enough information).