Dont let fear of valve adjustments stop you from getting a 916...Ive done both 2v and 4v adjustments and, although the 4v is more time consuming its not especially difficult...the main difference is you need to pull the cam to change closer shims, then re-insert and re-measure your clearances, so if you get it wrong you may have to pull the cam a couple of times.That being said, who here has done valve adjustments on both 2V and 4V bikes? I have talked to some people who say that adjusting the valves on a 4v bike is an order of magnitude more complicated then on desmodues. I have done the 2v deal many times but it is the fear of an incredible increase in maintenance difficulty that is my primary reason for not considering a 4 vlv bike (although I would love a mid-90s 916!)
SP (I mean PS) I can never see getting rid of my SP!
Get a Haynes or DesmoTimes book (preferably both) and follow the instructions.
Remember what FDR said.... "We have nothing to fear but the fear of desmoquattro valve adjustments itself !"