

The idler arms have a hole that fits over a pin on the hull to ensure correct alignment. If you want to re-position the arms for rough terrain just shave off the pin. This kit is designed so that the upper hull will be removable. It's held in place by two tabs at the front and a large poly cap at the rear. This, and a flashed-over rectangular hole in the lower hull (switch-sized), makes me think that a motorized version is in the works. The two tabs I mentioned (Parts A13) are added to the upper hull in Step 8, along with the post (Part C42) that fits into the poly cap in the lower hull.

The upper hull fits well without them and I found that it will be difficult to attach it with those tabs in place, so I would recommend not using them, and cementing the upper hull in place instead.
One thing that I liked is that like most newer kits, some of the sprue attachment points overlap a mating surface and the kit's instructions make sure to point them out for removal. Very thoughtful of the designers I think. Another thing that I like about this kit is that there are only five road wheels, two return rollers, and the idler and drive sprocket on each side. Many, many, many, less than on my last three builds. Yippee! More to follow.
