im about to stud my 137" 1.25" track with 1.5 stud boy lake racer studs. 144 count for now. How much of the centre of the track should I avoid? I've heard anything from 1.5" to 3.5". I want as many scratch lines as possible so I'm studding outside windows too. Wondering if I'll clear the front louvers? I have rear Arctic cat rear heat exchanger protectors....thanks