I keep throwing the same rocker arm on my 6.0 an can not seem to find out why can someone help me.

 

I have broken a couple of the rocker hold down bolts in the last 6 months, and it is very distinct when a valve isn't working isn't it? I doubt you will have any issues moving forward, but if you do, you will know it immediately. I am with bulla on it probably being a situation where there was probably a hairline fracture and it just let go with the added pressure of the better springs. There are too many people running 910's without any issues.

 

You may have better luck in the 6.0 forum.