Thanks everyone. I decided to anneal and reform to get the bottom leg flat. I will also thin the spring down to reduce the spring force.
I decided it wasn't worth risking the hammer with an overpowered spring.

Gordon, I was wondering if most people were able to compress the springs by hand or if they used some form of a spring compressor. I was going to use 1/4 aluminum plate slightly smaller than the floor plate and use the screw holes in the receiver body to compress the springs. I may give you a call if I have any problems.

Thanks