[Full Throttle]

Okay so im hearing a little valve noise coming from the engine in higher temperatures and in mild speeds. Is this possibly a CCT problem? When is it recommended to replace the CChain?

I know ive been asking tons of questions but this was one thing the dealer said was nothing to worry about but i feel it is. If im right then i dont think ill go to that dealer again. LMK what you think. Ive been reading about it on a few sites and i feel i need to replace it. Im just worried about the clicking valve sounds im hearing.