I spent a lot of time and effort doing the same and reinforcing the body to prevent it from changing or flexing and creating misalignment issues. Remember to have the body mounted to the frame and setting on the tires as it will be when in use when fitting the door(s).I'm still working on the door. My gaps are getting better. I want to get my gaps right before i move on to door handle & latch installation.
Hi Spanky , it's been up on it's wheels for several months now.