I feel your pain, my bow for the Red Oak board bow trade did that last night. It was a bendy handle 54" ntn and pulling 43# @28" and was shooting good then I noticed that one or two arrows bounced off the target at 15 yards and when I inspected the belly it had fretted like mad. Frets and chrysals all along the middle half of the bow. It made me sick because it was looking very nice and shooting very good.
Guess I am just not going to be able to make a short bow from Red Oak.
Grady