I just bought a used pontoon with a df115 suzuki outboard. It says in the manual that the water pilot hole on the back of the engine is adjustable. Apparently mine is missing since there is just a hole there. It looks like the adjustable part must have dislodged and fell out. Can I buy just this piece and install myself? Also, at idle I do get water coming out of the hole but it is a weak stream. I never get an alarm or RPM reduction. Is the weak stream because of the adjustable pilot hole piece missing? Thanks.