I refit the firewall to the fuselage and then carefully drilled the outermost holes and clecoed them.
I now checked the required 5/8" distance along the sides and towards the op of the firewall and it looks like I am going to do some work to get things sitting correct. The sides of the firewall are bowed a slight bit and is not sitting well/in-line with the side skins. I will have to remove the firewall and "massage the side flanges" to get a better fit. I also see that I have to trim just a small amount of longeron to get the proper 5/8" distances.
I'm putting that on the side for now, and I opted to check how the floor stiffeners fit. I first marked edge distances on all sides of the angles so I can easily identify trouble spots.
I then used the edge distances to help forward/aft placement of the angles
I was able to see how the angles interfere at the firewall. I could then easily mark and trim the floor stiffener to fit around the firewall angles.
An excellent fit!
