I recently played versus a player who folded to threebets a large % of the time, and when he did not fold he would 4bet. He opened about 60% of his Buttons. Versus this type of player do you just flat all your strong hands (AQ+, TT+, etc.) and threebet only bottom 25% (aka garbage)? Do you just threebet relentlessly till he adjusts? What adjustments do you make to players who dont open too much but fold to threebets constantly?