what is your rider sag right now? ive found too much AND too little both give me that harsh "i can feel everything" feeling...and it does suck.
on my V4, 15mm of preload was too much, and 9mm preload was too little...
my rider sag between both only varied from 23mm to 30mm...
i'm at 11ish mm preload and 29mm rider sag, and happy as a clam!
Now this wont directly translate to your V2...for sure...but if you dont know your free and rider SAG, start there. shoot for 25-30mm front and rear RIDER, and 20mm front free sag, and 15-20mm rear free sag.
just upgrading your rear wont solve anything if its not dialed in either.
good luck,
Jag