I've owned my 1990 TS for about 4 summers now and after my second summer I noticed oil in the hull, I thought that there was something wrong with the oil mix pump or hole in the line. I disconnected it and started to run premix and still notice oil collecting in the hull. I've tried inspecting all the fuel lines and still come up with no answers. I've noticed that there appears to be excessive amounts of oil around the air intake from the carburetor. I also know that the fuel is gravity fed and that these motors vibrate a lot. Is it possible that this excess oil is escaping the carburetor and spewing into the hull (which may be common?) Or is there something else here? Any information would be greatly appreciated. Thanks