I have a 95 model 48 SPL. Got it from a guy. It had not run in a couple years. He had been messing with it, so I know he was having trouble. The bowl was off the top carburetor, and it had brand new spark plugs in it. He told me it had 120 psi compression, but I cannot find my compression gauge to check it, and ordered one. It does seem to have good compression, though. I have had the carburetors apart, and they are clean as a whistle. Took the fuel pump apart and checked the diaphragm, and it is fine. It is getting good fire, that will jump 3/8". When I crank it, it will fire and pop irregularly, but will not run. I took a set of carbs off another 1995 48 I have, cleaned them and stuck them on. The engine does the exact same thing. Does anything come to mind? Thanks!