This is something i made out of fustration when my local hobby shop didn't have that little plastic tool to hold the track. all i did was take a square piece of wood "1 1/2 X1 1/2 in my case" set on top of the track and wack it with a hammer to make an imprint on the wood. carefully cut the indents with a hack saw blade and see how it fits, do this till it fits snug on the track. in my case i had to noch the block out to make room for the saw. Have fun!