Was the thing that seemed to go wrong regarding your own perception of the situation, or the other persons perception of it? Can you give me an example?
Well I think I've fallen fowl of misreading you yourself before now.
A concrete example

that would be difficult. I have noted before though that I've read and replied to an IJ before (dunno who, it's a generic pattern thing) and they've come back semi berating me for missing questions or parts of the subject which were important. It often leaves me confused because I'd considered them trivialities or side point and had almost filtered them out before I'd even read them. It makes sense that a person who drinks the barrel dry and then thinks about it would find that irritating.
Well, thank you... I just assumed the alignment test was the best way to find your alignment, and I can be very rigid about rules being observed, and notice if anything is out of place.
Best way, I find, is to ask others and compare it to your own internal model. Something about being only able to see two panes in the Johari window.
Interesting observations from everyone.

Everyone's getting rep points for their gems here.... as long as I remember this time
I can take a few turns with an IN/SFP or IN/STP without a scratch, but if I'm dealing with my ENTJ best friend, esp on a matter that's got her royally freaked out and irrational, I do best to listen quietly or pass the phone to my sister. Then again, Jaye and Athena are an ENFP-ENTJ dynamic and they get each other in spades. I get INTJs too. Wrangling with an ENTP on their home turf can be a handful sometimes, but they're always like that.
Odd that you'd find an ENTJ hard work. My sister is an ENFJ and my father is an ENTJ and they are as thick as thieves most of the time. Each can reveal the flipside to the other. She can map my fathers emotions very well and he can map her thoughts. I, on the other hand, just get told I'm disorganised and chaotic
Generally EJ and IP are just better at interacting in the world in a "natural" fashion. They see things just as they are, and they choose either to act on it or ignore it. EPs and IJs tend to have a nagging need to organize reality in a particular way before being able to recognize-act on it. With EJ and IP organization only becomes visible after action, with IJ EP first becomes organization, then action.
That's odd. What you said appears to contradict what Athenian was saying earlier on first reading and yet it fits in perfectly. What you've describe is kind of stage two after the person has either selected and picked up the "relevant" information or drank the barrel dry.
Very astute and very helpful.
Wow what an intelligent thing to say!
Yeah I was going to mention something like.. INTJ's and ENTP's pick up only the information that fits into their plan.. whatever that may be. They can miss stuff right in front of their eyes because of this... not a bad thing, just a thing. Then I think about morals (aka what's apparent right off the bat for ENTJ's and INTP's).

an ENTP who admits to it!!!
Bet my INTJ mate would not admit to such an illogical behaviour.
Not sure about morals as in the standard definition but if you're talking in terms of what fits, what flows naturally and what is expected then yes I guess the EJs and IPs are usually better predictors.
I wonder if that could be a useful title.
EJ/IP = Predictor.
EP/IJ = ???? (Reactor???)