For years I kept my bows at or below the 65% maximum let-off required by P&Y JUST SO I COULD ENTER A BUCK SCORING HIGH ENOUGH. This year I bought a new Razortec and it comes with the 75% cam and a half as standard. I could spend the time and $$$ to change the cams, but decided that the likelihood of encountering such an animal in the areas I hunt make it an unworthwhile venture. P&Y has every right to make and enforce their rules and I might change the cams if I begin seeing the bucks making some of the rubs I' ve seen!!