G'day FNQ, I still have the old Mariner motor so I will either do one of two things. Maybe sell it in "as is" condition or pull it down and do it up and then sell it. Will see what happens. It still starts and idles fine, just has a problem in the revs which still could just be because of it sitting still for 4 years. It may just need to be run. But it also may need the rebuild.
Poodroo