Was using my troy bilt tb200 mower today and ended up hitting a tree root. The mower turned off immediately and blew out the filter assembly. I reinstalled it and I checked to see if the blade was bent, it wasnt. However, the starter assembly seemed a bit slack since it was moving a bit with each pull. Anyway, I continued mowing. But, when I was putting the mower away, I saw that the bolt on the valve cover tore away from a metal sheet (mounting plate?) it was screwed into and split the threaded hole in half. Any advice?