In the Charger plans, I see some parts called out as 0.063" 4130 sheet, and other parts as 0.065" 4130 sheet. Is it important to stick strictly to plans in this case, or can I safely substitute one thickness for the other when I come across it? It seems like it should be safe, but I don't know for sure. I also have a feeling that 0.065" steel is not easily found these days, but I haven't really done the research to back that up.
