I have owned this outboard for about 18 months and the gear shift has always been reasonably stiff, but when I took it out last week it had become so stiff that I had to use two hands to get it in and out of gear. I was worried that I may have a problem with the gear case so I disconnected the shift linkage but it remains just as difficult to move the shift lever even with the shift linkage disconnected. I suppose at this point I was somewhat relieved that I didn't seem to have a problem with the gear case, but I'm now wondering if anyone has any ideas what could be causing it to be so difficult to shift. I've sprayed lots of lubricating oil over everything i can see up the top with no real effect. Any help gratefully received.