I started to assemble my NWG. So far, pretty straight forward. The hardest part is marking and drilling the holes in the right place so that they align, but that's fairly simple with a drill press. I did have some difficulty making sure that the tracking wheel was square, any tips on how to make it dead on? I am also having difficulties to get the drive wheel square too. I just can't seem to find a way to get a square it straight edge to give me an accurate reading. Thanks for looking