I got talking to one of the owners of the B and B that I am staying at yesterday and discovered that, he is a keen motorcyclist, has bicycled and mountaineered in South America, owns a Unimog and was able to give the name of a local guy that does motorcycle maintenance and provides parts and service. The web site for this local guy is http://www.advcycleworks.com/. Today he (Dan the owner of AdvCycleWorks) fitted two new tires and gave my bike an oil change. I should note that Fairbanks has a BMW Motorrad dealer but they are closed on Mondays.