[Tjd]

Sorry to hear life got in the way of your project. the reason for the edge is the way they manufactured they used to punch and nibbled some of the parts when I originally startedDoing chassis the machine shop next to me had a Tracer punch which follow the pattern then they moved up to cnc punch. when I worked for the old fart I was having the parts maid using a laser. I am now currently building some chassis using a CNC plasma to replicate the originality of the CSX chassis
Tom