Help! I have a 1971 36 with twin 120s. They have the Simms pumps. I have noticed that I am geting fuel in my crankcase oil. The oil; level was a couple of Qts high, so I drained off several Qts and refilled to get home. <P>I don't know how long It took to get that high, My dip sticks are hard to read, and I haven't had the chance to calibrate them yet. The oil was noticibly thiner than the other engine.<P>I suspect that the problem is with the pump. I have seen similar problems on automotive diesel engines. Fuel leaks from the pump through a bad O-ring and into the crankcase. Has anyone seen this before?? Please tell me there is a O-ring or seal that can be easily replaced to fix the problem.<P>The engines are old, but only have 1600 hrs on them. They run great. This is the first sign of trouble I have seen.<P>Thanks,<P>Ron H.