I have a problem with my motor. It will crank, idle, run fine. Then when I give it full throttle it will barely go. It will rev up with the manual throttle, if I put it in reverse it will rev up. This is an intermittent problem. I can run it for several hours and it is fine. Stop for a few minutes, crank it up and it just won't go. Sounds like it is "bogged down". Let it set for a little while and the problem may go away or it may not. I had the same problem with a 77 Johnson 70hp and it was trash in the high speed jet. Any help would be appreciated, Sorry for length