Hey guys, I recently bought a used 7753 and I noticed that there is a small oil leak (less than a quarter cup) dripping from the "inspection cover" beneath the bobcat. When I took the three nuts off, more oil came out (probably a half cup). It seems that the leak persists even if the machine hasn't been running? Any thoughts or suggestions? in the service manual I've read that the crankcase plug should be changed after ever oil change (I'm sure it wasn't). Could this be the culprit? Shawnp