Couple observations...I'll bet you aren't busting checkrides for making "one small error". Perhaps a more honest of your performance is in order? In my experience, the error that ends a checkride is not the first/only error made on the ride...usually, there are a multitude of errors that have occurred during the process...the applicant merely siezes on the last error made and determines that "small error" is what caused the bust.

Second, a point of common sense in test taking, stop "getting a DE and FAA fed on things they didn't know". Showing someone up who is in the position of evaluating you just isn't wise.

Just my opinion, I could be wrong.