Well, the creep you see could be measurement error, and it small enough wouldn't do anything now but ride and continue to measure.
Some will say that is the soft valve seats wearing, but I would say to wait until you need to replace them before making a change. I believe Airhead Wrangler saw some similar number on his ST, and then rode 15K miles to somewhere in South America and back from Seattle with no issues.
How's the compression?
"punkrocks what it's all about" - J. Strummer
Originally Posted by Stagehand
your bike is suitably dirty. Well done.