I have a 2003 STX 900 2 stroke. I am finding 2 stroke engine oil in the bottom of the engine compartment. It is not a lot but would like to know if this is normal? The jetski runs great, Plugs look good, it has Good compression. I have checked the oil injector hoses and though I can't see where they go into the engine, they are connected to the injector pump. I bought it used about a year ago and have noticed it since I have owned it.