I just bought a new 70lb Diamond Outlaw about 2 months ago. Right off the bat I was hitting bulls at 10 and 20 yds until about a week ago. I am getting close but not like before. I checked over bow and made sure everything was tight and in the right spot and waxed. My question is what changed? Does a bow string stretch?

Thanks
croc

Are you still grouping good? Strings are known to stretch a little bit throughout the "break in" period but you still should be grouping if this occurs.

new bow, could have loosened up a bit,
are your groupings just as tight as when you were hitting bulls?
or are they scattered?
tight groupings might just need adjustment of pin/rest/screws
scattered might be the shooter,
first look over the bow, make sure everything is tight and nothing loose, screws especially, every screw.
start back at 10 yds and start over

scattered about 3 inches from each other.

scattered, about 3 inches f each other