A2000 still too stiff!!

Don't do anything drastic like water dunk.  Keep breaking in gradually.  To speed it up a bit, use a glove mallet and a good conditioner like Nokona or ProPreps and just a bit of warmth, like in the back seat of a car on a warm day.  A quick one-minute shot in a pre-heated oven will do the trick.  Just enough to help the conditioner melt into the leather a bit.

Apply conditioner, warm, Hammer the pocket with the mallet in a way that simulates catching the ball.  Repeat.  Repeat.  Repeat.

Good advice cabbagedad, just make sure you use any conditioner or oil very sparingly...too many glove ruined by saturating a glove, and making it heavy, and lose all stiffness.  Same goes for oven, microwaves, etc., be sure you don't do it long enough to break the leather down such that now you have a rag on your hand. 

One thing that always worked for us was to dial up a pitching machine, and catch a few hundred balls, it is a quick method, and the high speed impact of the baseball hitting the pocket will help break it in pretty darn quick.

My 2015 had his A2000 steamed at the local sporting goods shop where we bought it. He was very happy with the results. I think most Dick's Sporting Goods have the Mizuno steamer now.  I've attached a link to a short video.

http://youtu.be/QwQMw_OObBs

A few years ago, we had the same exact problem with A6000.  I agree with Cabbagedad...don't do anything drastic.  We ended up applying an oil that my wife uses on her horse saddles.  The thing got so heavy (and it was still stiff) that it was unusable.  Tough lesson learned. 

Search for Aso Wilson glove guru.  He has several videos online.  Good luck. 

+1 Golfman - the Aso method worked for us as well, when Jr's bat bag was stolen, and we needed to break in two new gloves (1B mitt, and fielding glove), in a matter of days.