3" Single Track Shelf Bracket

[The original model for this](https://www.thingiverse.com/thing:2909231) came across my view at the exact time I was pondering the best way to display my massive Skylanders collection (the figures in the photo are only a **portion** of my entire collection!). I immediately called up the local hardware store and had them order me some single track. I had already printed a set by the time the track came in. Sadly, the tabs on the original models were too far apart and the length of each tab was to