I got my boat running good. I cleaned all the carbs and it runs like a champ now. Had one mishap though, 3 of the 4 screws in the bowl on carb #1 backed out on me. Fixed that at the dock though. One thing I did notice was the prop seemed to be slipping, when I backed off the throttle and took off again it was ok. How tight does the nut need to be on the prop, it seems loose to me. I have a 76 Evinrude 75hp