when to call a habitual pusher

[BLdSWtTRs]

Going back to my memory bank the worst thing I remember him with is aj in one of his preflop all in situations and then he's probably going all in 1 out of ten hands.

Maybe I should lower it a lil bit, but I can't see a6 being a good call at all. A lot of hands you will only be a slight favorite and a lot of hands you'll be more than a 2 to 1 dog.