They sound very nice, Mark.
Can't remember the relative weights now, but guessing the later 35 piston is a good bit lighter than the 80's.
. The cycle on the old nail of a 35 that I also thus converted feels very quick and light on recoil, too.
. In fact I had a quite enjoyable (albeit far too brief) little session with it on Tuesday. Love that rifle.
. Obviously, different spring set-ups will all offer differing feels and that longer transfer port is sure to have an effect, too. I feel sorry for the poor, unenlightened souls who don't "get" the 35.