While waiting for pilot jets.
I had to check valve clearance since I heard a vague ticking at last slow ride in slow speed. Like from one valve only.
The sound came from 1-2.
Worries about loose nut made me to pull tank and check all.
Ex 2 had a little little bit more lash almost 0.2mm instead of 0.15mm. In 0.1mm
(cam RC295 profile)
Most of the other adjusters could be tightened just a little to the right feel when pulling the feeler gauge in the lash.
No bad signs of wear or lack of oil inside. No smell of metal powder either

The lash caps might been pressed deeper on the stems compared with before. Or I did a too quick adjustment last time.
Wider lash is not the wear I like, more understandable with tighter lash when valve (and spring) are seated deeper due to use, coming up.
Possible root cause:
I think that I did not check that exact last time. Most important then, avoid too small lash.
Before that cam installation with thicker film of assembly lube. Adjustment without valve cover, rocker pad on base circle, not using marks on advancer.