I also use the EDM lifters on mine. And I had no problems breaking in the cam as we left the inner springs off to break in the cam. I used Valvoline VR1 racing oil and a bottle of the Comp Zink additive. I also used the cam break-in lube on all my lobes. No problems at all and its been in the car since 2011. Dwayne Porter speced me a custom grind cam and it was no more then an off the shelf cam was. He has good prices and does awesome work. I wanted a custom grind since I run 92 pump and I wanted some power but had to keep the cyl pressure below 190. And it has never pinged with 37 total timing. Ron