Did you go back to where you found the half? How about that old highway you found? Mark, I have 9 wheats this year, (trust me that is not a big number) but 7 of those have come from places that I have hunted at least a few times each year for several years. One came up with two other cents, one from the 70's and one from the 80's. I don't think it was in the ground more than a year. Do you max out your discrimination, to get the deep stuff? Are you hunting real trashy places, where the good stuff is masked? I wish I could do something to help Mark. The coins are there, you just need to get your coil over them. Speaking of coils are they the same size and if not, do they interchange? If so, you might try the largest coil on the more powerful machine, if it isn't on it already. Good luck, Mark maybe it will come this weekend.