Have any of you had to replace rocker arms and bolts? I just had one broken bolt on the drivers side a week ago. The shop said all else looked good, no major wear anyplace so just replaced the bolt and put it together. The day before christmas I ended up with another tic tick and a miss so I was disgusted and dismantled it myself to find a broken bolt on the passenger side. I scrubbed and studied the rockers and pivots carefully and find a lot of wear on the pivot and in the rockers themselves. I want to replace them all but am wondering if anyone else has done this and used better quality high performance roller rockers etc?