I've got a Kawasaki 24 hp FR691V bought new in 2010. It started getting hard to start.Then It wouldn't crank at all. I was told the valves needed adjusted. I took the covers off to find that 1 of the rocker bracket bolts had backed almost all the way out. the other valve was so tight it bent the pushrod. I replaced the pushrods adjusted the valves but its still not turning over. Anybody have any ideas for me??