Ok here is the deal. STC is getting a complaint of the first Gen trucks about the bed rails on the fast track not linining up on the holes. I'm not a second gen owner so I didn't know this off the top of my head. STC asked if I could help them find out. The one guy in particular has a 1970 model that the rails do not line up. STC sent a second set that they made sure the mounting holes were correct to the templet. Same problem. I pointed out that I knew that there were two different hard tops, the single wall and the double wall. What I didn't know is if the mounting holes were in different locations. Anybody know? Can anybody give me measurments and the year so we can find out? The measurments they would need are distance from inside of the bed rail to the center of the mounting hole. From the door frame to the first and last holes (if you wanted to give me the distance to all the holes that would be fine also). STC is making an honest attempt to try to resolve some problems to provide a better top. If you guys are seeing problems let me know and what you think it will take to correct and I'll get the info to STC. I'm aware of some feeling that the stiching needs to be doubled up Give me the locations. Some complaints about leaks at the corner of the windsheild also. Let me know what you think it will take to correct the problem. Don't make this a rant post. If soemody has pointed out the problem already that's what I need. First thing They need is this bed rail information. That's the problem they are starting on. Thanks!