O.K. guys I give up I am ready to sell this heap. I have been trying to get this valve train right for 3 weeks now every night and still no luck. I have stock non adjustable rockers pedastal mount. The heads are factory to the best of my knowledge. 303F cam. I had head and block milled down and a 3 angle valve job. Before I had the work done I had some ticing going on and now I still have noise. So I went with longer push rods and guess what. I still have noise. I checked the preload on a few of these and I have differn't preload on all of them on one I have .053 on another I have .061 and on another I have .091. Something else I have noticed is on some of these nomatter how long I wait after I loosen the rocker arm when I torque it back down the valve starts to open. You can actually see the spring start to compress down. And it doesn't matter if the car has sat for 2 day or for 1/2 hour. It's the same valves it seems like that keep wanting to open. I know I am on the base circle also. I have done everything Crane Cams and Comp Cams ghas told me to do. If your are idleing you really cant hear anything but as soon as you give it gas it starts ticking. You can hear it inside the car and out. I give up. Also dont know if its related to this problem or not but the car feels like it doesn't always want to hit on all 8 cyl its sluggish here and there.