I have tweeked the pit pans some, BUT not to my liking. The problem I have always had with the pit system is you bend the dog to change the pan tension. What happens when you catch a coyote and it bends the dog just a little? It could happen. Do you change the trap after every catch to check pan tension? I dont have time for that.
I put the hump cross piece in a vice to straightin it out, weld a new cross piece to it, already set up for a post pan.
After reading the response from ric I went to the shop and put a post pan on a #3 I traded for. 20 minutes from start to finish. It takes longer to build the "ears" the pan bolts to than any thing else.
I'm not trying to start a argument or take a sale away from Hal. Just trying to show there is more than one way to modify a trap.