I have been reading the various posts about bogging in order to fix my problem. Since there are various avenues to pursue I would like to post my problem to see which is the best course of action.<br /><br />1. Boat runs fine at about 75% of WOT.<br />2. When I get on plane and run at WOT it bogs after about 30 seconds. Problem started late last fall.<br />3. I cleaned my carbs with Sea Foam and put some in the gas to see if that helped. Changed my water separator filter. Took the boat out and it ran for about 15 minutes at WOT. Thought I had the problem fixed. Then all of a sudden the rpm's dropped. And the problem came back were it would not run at WOT, only for a short period of time.<br />4. If you pump the primer bulb it will stay at WOT better.<br />5. When running with the muffs, the gas level in the little filter on the outboard drops from about an inch to about a quarter inch in height. Is that normal?<br />6. Pulled the wires off the plugs one at a time when running with the muffs, and all responded with a drop in rpm.<br /><br />Am I having a air leak problem or a VRO fuel pump problem or other? Sorry for the long post.