A little update. Because I could not find any company that makes a solid roller lifter for the Gen 3 Hemi, I purchased a new set of Dodge lifters from Summit. I bought the WH-59 small spiral lock from Smalley. They do have a minimum $25.00 order, so I was very surprised to see 166 locks in the bag! If anyone wants to do the same, send me your address. After removing the spring and ball from the inside of the new lifters, it takes .148 - .150 small washer shim to bring the cup up to the retaining lock. It takes a little time to get the lock in the groove, but it locks in tight. Thanks for the help! Dyno