I been shooting the whisker biscuit in the configuration shown below, for about a year now. There is at least 15,000 shots through it with the notches. I can detect no difference in arrow flight with the notches, other than there is no speed loss at all with these modifications. The back of the biscuit is trimmed, a notch was cut and even with all these modifications, it has held up as if it were new. I' m not a pro, but I shoot better with this rest, with the notches and all, than any other rest I' ve ever used and I' ve been shooting for many years. I highly recommend these modifications.