I just had my prop on my 1975 Merc 650 65hrs 3cyl motor adjusted down from a 13in pitch to a 11in pitch to hopefully get another 300 rpms at wot. My question is, when I got the prop back it was totally clean and looks like they put a new rubber (gromet?) on it, what should I use to clean the grease and grime off my prop shaft and then what grease should I use to replace the grease with?<br /><br />Thanks