good to hear no hammer for you. i'm having Guy Martin "DO" Pongo's heads. when i get heads back, they'll have huge aftermarket valves, which necessitates the use of mbp collets. stainless steel (or Ti) valves get mad at the OEM collets.chris kelley said he had trouble installing on his. tollerances to close. had to use a hammermy install no hammer involved.
chris
