how many hands do you have on him total (was that the 3.5k number)? his numbers will tend towards his new playstyle, it'll just take a while to get there.
here's a thought, since you have so many hands on him why not rely on your
notes and not so much the
vpip /
pfr numbers. you should know him
well enough to not have to make postflop decisions based on things like "oh
well his agg factor is pretty low so I should
fold to any
aggression".
EDIT: definitely do not clear your DB
EDIT x2: After some thought, it might be wise to start a new DB after prolonged absences from the game, say 6 months to a year or more, but def
don't throw out all info. I'
m not sure if it's possible, but for those long term grinders who have databases that are years long, is there some way to
chop off the oldest info and keep only that which is most recent/relevant?