well I'm finally back on the water,new short block from japan took 5 months to get here,SB 51 tell s about a problem with the shift shaft moving excessively in a seal on the underside of the powerhead due to excess motor mount wear,shift shaft broke flanges and allowed seawater in and engine oil out,new retro kit installed to fix this with smaller shift shaft,new exhausts pipes and oil pan gasket installed also,all for a mere $9000 in parts and labor, I wondered about other engine doing the same thing but motor mounts appear to be solid, anybody have any experience with this phenomena?