I have a 150gt johnson, I found all plastic bases on carbs were warped and leaking bad . I found a set of carbs on ebay off of a 1987 150, the bowls have 11/4 stamped on the carbs, my old gt carbs have 1 5/16 on them. the jet sizes on my gt carbs are 30 idle and 65 high speed. the 1987 carbs...