HELP ME DEFEAT THIS FISH

Hey guys, my 1st post here at FTR. I've been a loyal reader for about 2 years but for some reason have not yet posted. Anyways, I'm a 50NL grinder. I've recently taken to cash games and am up about 19 buy-ins over 6k hands heads-up. I was curious about a strategy about a specific style that I seem to get frustrated playing against. Villan limps every single button, but calls every single reraise (even if 6X.) If i check pf to his limp and then check to him on the flop, he auto-bets. If I raise this bet he calls 50% of the time and folds 50% of the time When I'm on the button raising, he calls every single raise. He will not fold post-flop if he gets any piece of the board, and often if he misses. This seems easy enough to exploit, but i seem to have a problem with it. I tend to whittle his stack down, only to double him up when he finally has something. Any standard adjustments here besides tightening up?

Gee thanks everybody :(

value bet alot thinner.

I would re-raise

Play tight preflop... and be SUPER agressive post flop...

Well, everything he's doing there is pretty much a mistake. So make it as big a mistake as you can.

1. raise a tight range (for hu) pre and raise a standard of 4x or 5x. If he doesnt adjust his play to this youll pwn him pretty hard.

2. C Bet all the time. if hes folding everytime hes missed im guessing you're just not running all that great against him cos this is just so Awful if he calls all pre flop raises.

3. Value bet real thin multiple streets with like middle pair etc

4. Don't run any major bluffs

5. Be patient - these donks piss me of all the time at 50NL but they give me so much money - I always get them in the end.

Patients is the key here I think. If he gets to you then you TILT and that's it his 56 of diamonds beats your AK.