I happen to visit a local dealer yesterday and asked about the cost of a 20K mile service that would include checking the valve clearances and swapping out any shims if necessary. The dealer told me the service interval is 24K for my bike and would cost about $1200. While this seemed hard to swallow, my owner's manual said the interval should be 20K mile. Anyone have this work done recently at a Triumph dealer - cost??? recommended mileage??? Thanks for any input.