What is weight of stock 340 piston

Hey Pishta....
I tried one of the hanging rod weight setups.... holy crap! LOL I see why you say what you said with it being a problem with a cheap scale. My hang length was nice and long, about 2', and everything was plumb and square... not good at all. It seemed like the slightest tilt of the rod would change the reading drastically. I would gently squeeze the parallel threads together hanging the hook supporting the small end of the rod, so it would very slightly lift the rod's small end while the big end is on the scale; this should make the rod's big end weight go up slightly.... nope, went DOWN.... a LOT. Seems like any tilting force on the cheap scale's surface is the issue.

Went back to my flat plate jig.....got a 1 gram variance putting the same rod on a coupla times.