PRUSA MM Y-Multiplexer without Steel Tubes

The PRUSA MM (Multi-Material) v1.0 Y-Multiplexer uses steel tubes for smooth filament pass-thru and it WORKS!... but if you filament is not perfect or too soft, then it will get stuck in it and the nightmare starts :)

This is part is based on the idea shown in https://www.thingiverse.com/thing:2740929, but since I had a really hard time trying to remix it, I decided to create one from scratch using it as template as well as the official Y-Multiplexer.

The differences between https://www.th