Not trying to hurt feelings in here but I feel I need to say something about JD.
EVERY single JD that I have ever played in my entire life plays let's say "different". I don't mean "slight subtleties" different either. I mean like "earth shattering" stuff is broke different.
Fair warning: I know a LOT about JD and how it plays...
PAPA JD that they use in tournaments= right flipper sucks after about one player goes.
PAPA JD that they had in quarter play area= those flippers are ALL weak. May just need new EOSs on all of them.???
JD that was on location in Cincinnati that I played back in 2006= was ok, but the optos needed cleaned and the upper left flipper needed rebuilt.
My JD= played like total crap when I got it. I rebuild every flipper, replaced ALL lighting connectors, and essentially worked on it for 30+ hours to get it straight. I have to continually tweaked the game here and there for HOURS to keep it playing great. Dead world does not spin properly, 
but that's just eye candy.
My friend Scott's JD= it played the best out of any that I have played in the last few years. Sadly, sold long ago. I appreciated the tedious tweaking that is required by JD.
Collin's JD= he had not really gone through it yet but it played ok. I little un-level and the upper flippers were a little weak.
I played one at the MI pinball expo 5 years ago= it played but the crane was poop and it also had some serious lighting issues that made shots very hard to see(no GI).
So, the moral of the post? If your JD is "playing great", just wait a bit and it will suffer from some quirky problem.
HAVING SAID THAT: it's the reason why it gets such a bad rap for those that have never played a nice one. Now, I have seen JD at shows but EVERY one I played at a show had some insane problem that makes it unplayable. THAT is really a shame since it's a fun game.
JD is a pin that requires some of the most "routine maintenance" of any game that I have ever owned. If you have one that is mint and playing great, that is a rare event!
MAIN JD killers= heat in head, crappy EOSs from the factory, burnt up GI connectors, flipper opts and associated parts, gears self destructing/binding in crane, ramps self destructing, ramp parts self destructing, resets caused by cold solder joints or separated/bad bridges.
Dunkirk, MD
