Okay I am cutting on a pair of 308 heads for the valve stem seals. I am installing the Howard dual Springs for a roller hydraulic cam. I have a couple of questions that maybe some of you fellows can answer that work on heads for me. Okay do I remove the step next to the valve stem on the head for my innerspring to sit flush with my outer spring? I am cutting these for the .531 seals. They have already been cut for a bigger seal when they were done by Indy aero heads. I have cut down to the step on the head on the end 2. As you can see whoever prep these heads cut all the guides down short. The set I bought. Howard's 98438-K32 for 3/8 stems. The close out sheet has a 100 of these seals for $22.68.