Judging by the manual, removal of the left cover is a royal pain. The oil tube that comes from the bottom of the crank case and goes up to the head has a tab that interferes with removing the cover. I've looked, and I can't see where it attaches to the head, so depending on how flexible that pipe is, you could be in remove airbox/gas tank territory. that would make what should be a 1/2 hour job into a nightmare (may as well check your valves while you replace the shift shaft seal.) I suppose i'd think about grinding off the tab that holds that pipe to the cover and replacing it with a removable one - similar to what some people have used to secure their clutch cable. Looking at how difficult some of the basic service things are on this bike, you'd think that the designers of this bike were beaten up by motorcycle mechanics when they were kids or something. --Chris