a 1999 Stratos 290 Fish And Ski Intruder with Evinrude Ficht 225. Model e225fpleed, Serial # sg04717115 I had the Lower Unit replaced in feb.09. I have been seeing oil in the driveway everybody has been tellng me that it's un -burned oil that came through the exhaust. Monday i took the drain screw out and water came out 1st, and then oil and water, and then all oil. I took it back to the shop to let them fix it. What do you guy's think the problem is?