This is a shot of the 1/4″ oversize pattern at the top of the wing. We typically remove some metal from the Series 1.5 when we lay these on, but not much – not a whole 1/4″ all the way around, because they are already oversize a bit compared to a Series 1. If you are overlapping your fanges (or underlapping is a better term I guess…), keep in mind that you are probably going to be inside the stock Series 1.5 opening, but NOT an equal distance all the way around – they are “sloppy” compared to the Series 1 opening shape you need to get to…