Sounds like I've got the same heads as you but I just got mine back from the head shop. The machinist said that the CNC porting job looked pretty good but the valve job was ****. He said it looked like they did a 1 angle valve job and that the cut was pretty far back (deep?). The spring rates weren't very consistent but usable. However, I'll probably have to shim springs maybe .030 to bring the pressure up a bit to match my intended cam. I also had an intake and exhaust port flowed. Results match up pretty well to what others have posted with the intake topping out at 274.