Heck, I thought we might have a common circumstance! I was sweating it out and didn't travel too far. After 700 miles and no issues, I'm guessing everything is seated well. One of the exhaust valve clearances of mine was .34mm. Very loose. You could hear that one rattling away. I'll be curious to see the measurements at the next interval.

There has to be an explanation for the noise. I reasoned everything was ok by reviewing the measurements and since all but two shims were only 1 size (.025mm) different from the originals I decided to leave well enough alone.

When you rotated the motor by hand with oil in the case, did oil get pumped up into the head? If so, was it manageable or did it make a mess?

I have to believe this isn't the first time this has happened. I'd love to hear a Triumph tech instructor/mechanics take on it.

Jay