I just got my 07 bengal... it is the best bow ive ever had by the way... but im wondering... the only thing i forgot to specify when i ordered it was 65% let off.. so i now have an 80% let off bow.. to change this do i have to get new cam??? also wondering if a fuse 2 piece quiver will fit the bengal?? how much is the speed difference with 80% vs 65%...