shimming hydraulic roller lifters solid

my intention is to use the existing HR Cam with a little more stiffer springs on a offset rocker head. New Lifters would be the best solution of course, but if possible i´d like to modify the existing HR-Lifters - to save some money. I´ll take some pics of a disassembled HR-Lifter, maybe we can discuss better to put what stuff where. Thanks for the discussion!

Michael