I recently had my 1995 Oceanrunner 175 hp in the shop for a tune up and to have a new trailer installed under my boat. I was only experiencing a slightly rough idle. I asked the boat mechanic to change the lower unit oil, replace the recor filter, check the compression, and adjust the rough idle. When he worked on the motor he noticed that two of my carbs were leaking. So he put carb kits on 3 of the 6 carbs and cleaned the other 3. He said that the gaskets were bad and the needles were about disintegrated. When I took the boat out the next day I immediately noticed that the motor seemed to be bogging at low speed and seemed to want to shut off at idle. Once I pushed through the bogging it ran fine at medium and top speed like usual. It also seemed to sound a little different (quieter) at the higher speeds. After 20 min of running I stopped to anchor and had the same problem with the bogging and low idle. After 3hours of anchor with the motor slightly tilted because of shallow water I went to return to the dock and the motor would not start. It seemed to be either not firing or not getting gas. After 15min of pumping the ball and choking I raised the hood and did not smell any gas. Gas was getting to the motor because when I took the fuel line off on the motor side of the racor gas shot everywhere. After 20 min it finally started but continued to bog, etc. It even shut off when I put it in gear once. When I got back to the dock I could not get the boat on the trailer with the motor because of bogging and shutting off when I was putting it under a load to push the boat on the trailer. I took it back to the mechanic and he is not even looking at the carbs just the cylinders. One of the cylinders has wear and he is saying that all of the problems are coming from this. He said that he did an air test and air blew through the cylinder and out the carb. I really don't think that this cylinder is the problem. Yea, it's worn and will probably need attention soon, but has probably been in that condition for some time. I think that I have a gas/carb issue that?s due to the rebuild. When started in the yard it seems to run fine. It only seems to have problems while in the water under back pressure. I also recently replaced the plugs and did not notice much fouling. My mecanic has had me go through a crazy stating procedure for the past 2 seasons. I have to pump up the ball, turn on the key, push in the choke, slighly massage the ball three times, and start the motor. I know this sounds foolish but the motor starts every time. Otherwise I risk having trouble starting. This proceedure only needs to be done when the motor has sit up for over 2 hours, otherwise it starts right up. Help