I have a 1990 Maxum with a 120 hp force L-drive. We had to replace the pistons and rings recently.When we purchased the boat last October we couldnt take it in the water and we were sold a boat that didnt really go in the water. Apparently the person that we bought it from got it hot and hence the new pistons and rings. We have taken it back on the water and it will only get up to 4000 rmp , the first time we took it out we adj the timing and the second it was about 5200 rmp but it seems to get less and less. We have adjusted the carbs and the timing and maybe that is our problem. Then we think that maybe we need a new prop but it was faster before with the same prop. It will only go about 25-26 mph we can barely pull one person on a tube at 8 mph. We are at a loss and about ready to pull the plug and sink it. We dont know why it is that way. We dont know what to do to fix the problem. Please help us! And no one in Utah will work on the L-drive because it is to costly and time consuming. Go figure just our luck. 
