These 650's are the first dog less traps I have owned. Not having the base back there where the dog is at on the Dukes to hold on to when flipping the pan up into position is what feels odd to me. I can get the levers down ok. Its hard for me to hold the jaw down with one hand, and try to push the pan up with the other. Need the "3'rd" hand to flip that catch over to get it under the pan. I like how they hold down the front jaw too. I'll have to be careful when setting these suckers. I always flip the front jaw up while I'm bedding the inside of the jaws. Won't be able to do that with the 650's!