First off are the wheels..... this will be the newer type in which lightening holes are noted. In the real tank this helps clear out the build up of mud/debris on the wheels that will cause damage to it and the tracks. Carson did a great job on the jig. Its made of hard aluminium and its solid and very heavy just like steel. Drilling this using a hand drill proves to be fidly. You need to be very careful as the angle of the wheels itself will cause a slight angle deflection on the drill bit despite the jig. I have to stop working on this as I ran out of 2mm drill bits (I broke 3 already despite being careful. Also note that once you drill trough the outer wheel you have to pin it down with a 2mm broken drill bit on the first hole to maintain accurate alignment just to be on the safe side as it has a small "play" when you drill.
First of the 12 wheels........3 drill bits snapped so far. If you have a bench drill available it will greatly help as its more stable.
