I switched over to the whisker biscuit this year and i could kick myself for not doing it sooner, it is by far the best hunting rest ive ever used,,,I know it a has few drawbacks as far a fletching but i feel the benefits of the rest outweighs them by far....i dont know if i got lucky or what but when i changed over this summer, i didnt have to change anything on my bow, it just worked out perfect for me...
but i did take measurements and took my time to put it on in the exact place my other rest was......
good luck