If you're talking about screwing the black FT controllers down, I use small 3/4" long roundhead brass standard slot screws from Lowes. They give a nice contrast to the black controllers. Also, the controllers "snap" together sideways to help keep them in line.
Also, you want to be careful about screwing down the FT, especially the switches, and not overtightening them. The way the FT snaps and stays together, I only lightly screw down the track about every three sections.
