Hi Bob no problem just a point with the cam chain you just split the chain as you would a rear chain join the new to old and pull through the engine and re join no need to strip the engine and the tensioner starts to jam up with age due to constant movement as it's and auto not manual unit and 40000 is time for a change no mater how it's been ridden. This is just my preference and normal service life of parts for these models and I'm an engineer so I always stick the the service guidelines for peace of mind and trouble free riding, as you've said there isn't many of these 11's left mine's an old mates bike who past away so had to buy it off the family and I'll keep it on the road till I can't ride any more so I've gotta start to stock pile parts now while you can still get them. I owned the first GSX 11 the ex and mono shocked the frame with a modified sling shot rear end and regret selling it.