I'm getting prepared to do a valve check on my 2007 Tdub. I bought it off of CL and it now has 6,700mi. I've done several upgrades and maintenance items including new: sprockets, o-ring chain, oil plug and filter, rear tube and tire, front tube, spedo cable replacement and gear cleaning, shorai battery, Colman seat cover, cycle rack, front brake fluid replacemet and general lubrication. I hear some tapping in the engine after it has warmed up and suspect the valves have never been adjusted given the questionable maintenance given to the other parts of the bike. This forum has made a world of difference in my being able to fix and get ahead of issues, letting me improve my ride skills and enjoyment rather than sitting around trying to find someone(s) to fix it. I've read the tutorial on valve adjustment and am ready to give it a try. In adjusting the valve clearance, four methods are mentioned: needlenose pliers, Robertson deck screw, 1/8" hole filed square, and a Yamaha valve adjusting tool (P/N YM-08035). I believe it is a 3mm square hole that is needed. Is that correct? Where is a good place to buy either the deck screws or the tool? I can find OEM parts online but not the tool. Thanks for your help.