Can not believe it should take 4-5 hours. Did mine on a 47ft vessel with 2.5 inch shaft in less than a couple of hours. Would expect it to be easier with a smaller system. As previous, loosen shaft attachment bolts slightly and measure gap between end of shaft plate to transmission
attachment plate at several locations around diameter between bolts. Adjust engine
mounting bolts to get at shaft/transmission plate variation to about 0.003 inch using feeler gauge. Do it after boat has been in water
a couple of days or so.