Simple Ender 3 mod for 3-point tramming

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# CAUTION 3/7/2021

The bed and tool-head aren't the only things that get hot on your printer. Since the flat-head leveling screws are also directly attached to the bed, they will also get hot. If you are already using this thing or plan to, please ensure that the screws are thermally isolated from the plastic (no matter what filament you use to print). This is **especially** true if you print at higher bed temperatures. I will deprecate this thing as soon as I post a better design that e