Hey Steve: I recommend you put the holes in the bottom of the center section. Reason being, that I have personally found several Coupes/Alons with corrosion (exfoiliation as well as surface) in the area behind the rear spar. This area is very difficult to see well with just the wings removed, and putting the holes, especially behind the rear spar, really helps to look at the area. Once the holes are in, it is easy to look at on a more routine basis than the 3 year period required by the AD.
Lynn
