Not sure Ive ever seen anybody complain that their BPs were feeding too well. LOL!!!
You may check the actual weight of the rats you are feeding and make sure you are giving a good amount to the snakes. They may need more.
But,
Some snakes are just strong feeders and will always hit the rat hard. My BP usually always gets a strong strike as does my GTP. My Bloods are a mixed bag as they many times just come up and take it fairly easy but then every once in awhile they will slam it. My BRB is much like my Bloods but when he slams it he goes all out.