We put in the new plugs and changed the oil, and it did wonders for the bike. My buddy says it runs and shifts great. We were pretty happy. If anyone was wondering, we put Valvoline Synpower 20/50 synthetic in both our bikes. From what I could find on the web it appears that the Valvoline product actually IS synthetic, as is Shell for autos (not Rotella odd I know), but the Shell is not readily available here. Also we put Purolator PureONE oil filters on. I have used them on my cars for years.
CB
CB