Lot's of nutplates

I have been working on installing the nutplates for the gas tank. There is about a hundered of them that hold that tank onto the wing. When I made the larger gas tank I used the small tank skin as template for the holes and then just shifted it to the outer edge and used the holes to complete the pattern for the screws. What I didn't factor in is that some of the nutplates landed right where a rib is. On the normal tank the screws all miss the ribs. It's not the end of the world but I have to mount the nutplates on the rib flanges. It will all work, but I should have payed a little more attention to the layout, factoring this in. The left wing will have that all worked out. I guess no matter how many airplanes you build, you're never done making mistakes.