So I know where this old F.E.D. chassis is. One of my buddies was toying with the idea of getting it. I remember someone talking about how the tubing on these old chassis may have weakened over time and wouldnt be safe for use. How do I tell if its solid to use or not? We are gonna go look at it on Saturday and It would be nice to know if I need to look for any fatigue in the chassis. Thanks.