My QB fuselage is about 6 years old (purchased from a previous builder...and I ain't building quick! ). Just tried mounting my Andair PX375-TC fuel pump and there is about a .115" inch difference in the longitudinal distance between the screw holes in the fuel pump and the nut plate holes in the mounts. I MAY be able to get them approximately aligned using a drift pin for leverage in one of the holes but, before I try anything like that, I'd like to hear any concerns or ideas any of you may have. Forward screws are loosely installed in the attached pic.