Arrived on site to inspect baseboards making noise on startup. We found that the noise that was occurring was thermal expansion. The pipes expand when heating up and make the wood creak as it pushes against it. We were able to get a pipe hanger around one of the baseboards to alleviate the sound on one of the zones but the other ones were too tight to the floor to get anything around them. The sound does go away once the pipes warm up though. There is nothing wrong with them just a little noisy for a couple minutes. Offered to do a tune up on the boiler but Steve just had it done and would like to hold off on it.