Crossmember swap woes.72 clip into 64 c10

[capriceutah]

Guys and Girls,

I pulled my crossmember out of my 64 c10 to swap to a rebuilt setup for a 72.

When I pulled all of the bolts on the 64 c10 crossmember, it didn't just drop out of the truck. I had to pry it a little.. not hard but a little. Now I'm trying to swap the 72 in and I cant get it to slide in. It's like the frame where the crossmember bolts in is like 1/4 inch too wide.

Has anyone run into this before(I'm sure someone has) and what are my options?

Thank you for all of your help!

Chris