grumpyonprozac

Hello all, I am following along with the online tutorial for FW-190 fighter. I can not seem to get the measurements to match up to what is shown in the start of the tutorial. I do not know how important this but I press on making sure the scale matches in the different views when I put a new rotoscope. My second issue that makes me wonder if the part I am stuck on has something to do with it is after I create the six point spline for the first wing I group select it, go to top view using the number pad on the keyboard, move the selected spline and click the extrude button. After I do this the extruded portion goes off in the exact opposite direction from what is shown in the tutorial this also happens when I do the spline for the fuselage. I feel I am missing something painfully obvious and if someone could point it out I would be appreciative. Thanks for reading. Grumpyonprozac