I had a powerplant instructor in A & P school that used the term but never defined it...in this case, I would say Kawasaki means 1/2 to 1 thousandths. At least that is what I do. Ideally, the feeler gage should just drag a bit if say the gap is .008 in. You could then try a seven as a go and a nine as a no go gage. But after 4O years of setting valves, I got the drag part down pretty well. TE=karl;100404]Lets define a "tad". To me it would be on the loose side of specification, or a few thousands of an inch.[/QUOTE]