We were cutting yesterday, and I herd a funky sound, one that i've never herd before, coming from my buddies 372. Just as I was about to give him the signal to shut the saw off, it shut off on it's own, and you couldn't pull the starter. Upon removing the side air cover by the starter, chunks of metal were found, which turned out to be a couple of the air filtration fins that were broken off. There was also a hex head screw wedged HARD between one the the fins and housing, causing it not to spin. Once we took off the top air filter and surrounding plastic, we noticed that 3 screws were missing. Two that hold the carb down, and one that holds the cylinder down. He flipped the saw upside down and the remaining two screws fell out, that were loose somewhere in there. I've always checked my exterior screws as i've noticed them prone to coming loose, but never the interiors, as they can cause some massive damage.