The more responses you give Ed the more he will post. He's just looking to ruffle some feathers.
As for the original post... I definitely agree that you should be able to get hired, but as an interviewer your situation would concern me. I don't want this to come across as rude, but I think that its important to take off the rose-colored glasses. Many people have failed checkrides, but it seems like you've got a trend going. Maybe on top of figuring out how to discuss your situation in the interview you could also look at finding a way to improve to practical test taking ability, and then also mention that in the interview.
The fact that you admit it is your problem and don't blame the Examiner says a lot about you already. Good Luck!