I was running my splitter the other day . It has a Honda GX 390 I shut it down and about 10 minutes later I started it up. It was running real rough. It sounded mufflely or farty. I shut it down and restarted it, same thing. Since I have had it, when I try to start it , the compression can be hard and the pull cord can get ripped out of my hand every now now then. Now it was even harder to pull and the cord ripped back with even more force. I was no longer able to start it and eventually broke the rip cord. I opened up the valve cover and this is what I found. I also found this and assumed it goes on the end of the spring since it fit so well I took both rocker arms off and pulled the push rods out,they were fine. I put it back together but didn't gap the rockers. It still sounds weird when I pull the cord and I still can't start it and the compression is way hard. Other than adjusting the rockers, what could be wrong. Also what should I adjust the rockers to? Should I pull the head? Could I have bent a valve?