brought ski to dealer for rough running. turned out to be the fuel regulator. They then call me to tell me it threw a code for the crank position sensor and they asked if i put oil into the case. i said of course not. i think the dealer put oil in there...i dont rust anyone. this weekend my bro and i are checking it out and oil is coating the CPS and making it run god awful. we clean it and runs fine until clogs again. what can anyone suggest?