XYZ da Vinci 1.0 Pro E3D V6 Drop-In Cartridge Mount - Enhanced Cooling

This is a somewhat hacked-up re-mix of the body of bdwalker1's "XYZ da Vinci 1.0 Pro E3D V6 Drop-In Cartridge Mount" to make it hopefully cool the E3D hotend better.

I closed some gaps that let cooling air escape where it shouldn't, opened up the 'channel' to let more air flow to the bottom, and partially blocked the top part of the heatsink to hopefully re-direct the air primarily to the bottom of the heatsink, where it's critical.

V2 revision created
This version *should* be printable