Can anyone direct me to a site/post that shows step by step sparkplug removal and install on a 2013 G650GS? I've looked on you tube and they have nothing on the G650GS as far as I can tell. The mechanic quoted $500 dollars for the 12000 miles service , which includes valve check and oil change. I would like to attempt doing it myself and spend the money on adding some better lighting for my bike . Any thoughts, suggestions? Thanks in advance!