I haven't seen a glue script around for A3 yet, and it was probably my favorite script back when I DayZ hacked. The one I used to use was by Twisted I believe, or maybe just in his menu. It had settings to set the left/right distance as well as up and down. It'd be great to have that one, if it's possible (which I'm sure it is, considering the flying swastika helicopter script works)