A buddy of mine bought a 1985 380SE on Ebay. It was bought with the understanding that one of the timing chains were bad. A relatively easy fix. Upon taking the valve covers off, on the drivers side head every rocker was off but 2. And those 2 I could pull out by hand. Is it possible for all valves to be bent at the same time? The towers that hold the cam are tight. I know we need to take the head off, but I'm scared to see what the pistons look like. Could the timing chain make this happen?