I am another Canadian dealing in Klicks not miles. Just had my valves adjusted at 40000 kms, the tech at DPE Racing (Woodbridge, Ont) said they were in great shape, didn't really need them done, one shim was changed but could have been left alone.
I also changed the steering bearings( did racetech valves reb. and comp. so did the bearings, didn't need to be done either he said).
Second set of plugs at 40000 kms, they needed to be done.
As for the K&N air filter really haven't noticed any difference. Biggest and most valuable change I have done yet is the Ohlins rear shock. Like having a new bike.
BTW Dynoed at 138.5 and 80.1. Numbers seem good for a 4 year old with 40clicks.
Brian