PEX96-Alt

[P3X's frame](https://www.thingiverse.com/thing:2188747) is finely designed, but transferring my Lizard95's electronics to it made the whole model a tad too heavier of the original than I thought.

This is my attempt at slimming the build by removing some material. While I was at it, I also redesigned the motor holes to make them align better for my 1104 motors: with the "Plus" orientation of the original frame, the cables came out from the motor not on the arm's support but sideways. With my