Trying to get a 5240 up an running for the winter. I got around to attaching the 4 bolt quick hitch horn to the top of the casting. And found one back bolt hole is stripped. Any suggestions. Would running with 3 bolts be bad? It is for a snowplow. I was also considering a Helicoil or rethreading with a larger bolt size. I guess these get a lot of pressure and get worked hard with forces pushing against them.