1969 dart reveal kit has two clip types

My concern is mine are the exact opposite in numbers to yours. My oddball clips are the handfull that have only one tab. Also, strangely enough, the new roof section that I put on my car has no predrilled holes for any of these clips (I don't even know how that could be). Needless to say, can those holes just be drilled out around the window frame and how do you set the correct depth for the clips?