Lefever assembly

My friend and I took apart a Lefever Nitro Special to clean it out. It was all full of rust. There was so much grime that the spring and pin that hold the release lever open when the action is was fozen down. The cleaning went very well all things considered.

Now I have to admit that I am in a bit over my head. We cannot figure out how to get the mainsprings for the hammers back in.

Does anyone know how to get those spings back in and the hammers back in and pinned?

Nevermind. Seems as though it just takes brute force.