I just purchased my first "Trifive" (a 1957 Chevy Belair 4dr Sedan) and neither the front, nor back doors on the driver's side will latch. I've managed to strip both doors down, and I've removed the four screws holding the latch mechanisms in place, but they're both still held in by a rail. This may be a stupid question, but how would I go about removing the mechanism, with the rail in the way? Or rather, how do I remove the rail? Help would be much appreciated... and please, be kind! I'm new at this.