I was having trouble catching things I didn't want to catch years ago when I used Bridger No. 3 Coil Spring traps. And I didn't like the high catches on cats.
These traps were tricked out with four coils and laminated, heavy base plates, etc. They were just too big and powerful. Overkill.
Since I switched to MB550s all of the non target problems including lions have all but disappeared.
Bigger is not better.