Wow, yeah that's taken a beating! :O strong stuff those T45s! If Curtis have had it on a jig and looked it all over should be OK...
At the other end; my was-NOS 4130 MX24 below, I was getting tempted to sell under n-1 as it's a small side for me and I'm not going lairy on it at all unlike Jim, but the spec the frame is built to is just too good, and a bit of a classic already!