I am trying to build a detail component family of a coil strap. I have managed to make the object stretchable to change the size but I cannot figure out how to make the nail holes increase when the size of the object increases.
 
For example: The metal strap has nail hole 2" apart so if I draw a 1' long strap it has about 12 holes but when I stretch the strap the holes remain there and I just have a long strap with no additional holes.
 
Anyone have any ideas?