I was sitting at work and had the plans with me so I wasted a few sheets of paper at work and a little printer ink until I got the right ratio that the parts matched the plans then went from there. So far everything is matching up to the plans after I determined the right ratio to increase to. To be honest though I was really worried at first but print a part and cut it out and lay it against the plans until it matched. Then I increase the other parts to that same size or ratio and everything seems to be spot on.