The #3 check was good at 25mm, but I felt is was good to back it off some. The new shim made no difference in clearance, all I can still get in is the 25mm blade. So both are on the tight end So question - is it worth the time/trouble to get 2.40 shims to loosen them up further?
You should be using go and no-go feeler gauge blades. I can't determine for certain your measuring technique from what you've written. For exhaust valve clearances, a 0.25mm blade is the
go and a 0.30mm blade is the
no-go, although clearances a few hundredths
greater are acceptable for many riders. I don't know about anal riders because I avoid them. :giggles Both those valves are
not on the "
tight end"; they are
within spec. Valves clearances are either
tight,
loose or
within spec. The replacement shim should have made a difference—at least 0.01 millimeter's difference. If it didn't, you likely measured incorrectly, but in my book, if the 0.25 blade passes through smoothly under an exhaust valve's cam, it isn't too tight.
If your valve clearances are currently what you represent them to be, enjoy the ride and don't be concerned with them.
When members are discussing clearance procedure, they should indicate the go/no-go measurements before shim replacement, the size of the shim being replaced in the assembly, the size of the shim replacing it and the tools they are using for measurement.