I am about to tackle my first major service @15,000kms including a valve check. Bike is a 2011 KTM 990 non-R with safari tanks. I have owned the bike since new (Mar 2012) and a first timer on this, but reasonably handy with tools and like to do my own wrenching (therapeutic until something goes wrong!) so I can get to know the bike and also know the job has been done properly. I will use paochows excellent valve check guide (http://paochow.com/forum/index.php?topic=45.0) and other guides on the howto including the shim calculator. I will also obviously do an oil change and clean the clutch oil jet. Any advice on feeler gauges (brand / type) would be greatly appreciated. Reading around the topic it appears in can be a struggle to get access to the valves to accurately measure the gap so very 'flexible' or slightly 'bent' feeler gauges seem to be recommended. I am also hearing a rattle which sounds very much like pinging/pinking (pre-ignition) emanating from the front counter sprocket area at certain revs - I am running a very slack, dry chain, so most likely to be chain rattle but anything I should look at while I am there. I am also tempted to check the clutch bolts and maybe swap out the water pump seal while I am there as well. Again all advice greatly appreciated! I am not dependent on the bike and have no trips planned and so will tackle the job *very slowly* over a couple of months of weekends. Tips, advice on how to avoid any gotchas, things to check while I am 'in there' are all very much appreciated. Just finished a 2 week trip through central Australia on this bike - lots of dirt - after getting some of the ergonomics sorted out I am really beginning to love this bike. Now time to return some of the love!