okay, so when I got my head back from the machinist I specifically asked him if I needed to clean it or anything before bolting it all back together. He reassured me that it was completely unnessarry to do any cleaning, just bolt it on and go. I noticed that there was some gritty sand like stuff on alot of the surfaces, so I asked again. Same response, just bolt it on and go. So I get the head torqued down yesterday, and I'm putting the valvetrain together, and I feel that gritty crap inside the bolt holes for the cam caps. I'm pretty pissed now, I spent 4 hours cleaning that crap out of all the holes and got everything put together. I'm pretty sure that the grit is valve lapping compund, my main concern is the oil supply for the cams goes through the inner bolt holes on the cam caps. If there's any grit in the oil suppy I'm afraid it will mess up my cams. What do I do? should I even worry? is it normal?