I was drilling out a stuck bolt in my engine and drilled the rocker shaft and underneath it just a little (less than 1/16") Im wondering if this is alright, or will it cause any damage? also Where the CAM holders go is drilled a little more than it probably should be but not outside of the flat area (just where it would be under the holder) would this cause me any problems? thanks

 

shouldn't cause a problem just as long as you get all the shavings out of the head when you are done. Personally I would get another rocker shaft if I was you because if you did make a problem it could really damage your engine