I'm getting a bit of water in lower unit,prop shaft is dry,i pulled it apart and suspect a shift rod boot,it slide realy easy on shift rod ??? are they prone to leak on this model??Also when i pulled it apart one dowel pin fell down that i can't see where it goes.There is two where i remove the 4 bolts and the third one i can't find a hole for it.Even on the parts list i don,t see 3.Thanks