I ordered a number of track items to inclued two 9 inch straight track terminals. The first one had the scews in so type I was lucky to lossen them without wrecking the hole piece. The second didn't make contack with a rail and required some work and time on it. Once getting them tacked down they had to be reset a few times again with differnt pressure and tightnesto let the terminal strip make contact with a rail, the scews units with a brass strip simply touch rail from below and are not soldered or cripmed in place. Securing the section to the track to tight or two loose they may fail to make contact with the rail above the brass strips I also have a switched with dead spots over the frog but that is common with some switches.