I've had my X-70 for about 6 months and just today I decided to try the accept/reject button. Am I right that the A/R button won't work in AM because you are accepting everything?? I went to patterns 1 and 2 and it pretty much rejected the big old rusty spike I was using. In pattern 3 there seemed to be somewhat less of a signal when I hit the A/R button. I was under the impression that it would null out completely. Did I do something wrong? I was using the 10.5, 7.5 MFDD.