Just put the Econo W2 heads back on the 408 stroker and proceded to measure my new pushrods for the cam change.I went from a hyd flat tappit to a solid flat tappit ,so i knew they would have to be longer..I made a pushrod length checker from one for a Chevy that i cut off and welded the top part of my old cup pushrod on.When i screw the adjuster out to the 1 1/2 - 2 threads hanging out of the bottom , i dont have much more than a full nut on the top .Is the lock nut to thick or is it just suppose to be like this with Harland Sharp rockers ?I have tons of clearence between the pushrod cup and rocker ,head and everywhere else on the base circle ,full lift ,and everywhere in between.The contact with the roller tip and the valve stems looks great also ...