Improved Precision Piezo

I made this "improved" version for the Titan extruder but it can be used for all groove-mount setups. With the bowden top, you can use it for bowden setups, but keep in mind that the PTFE tube adds rigidity inside the extruder and the piezo setup relies on a 0.2-0.3mm flexibility that this extra tube might not be able to allow.

Advantages to the original 3D printed housing:
-Smaller size, so it is flush under the extruder in case you want to put something behind or in front of it (fan duct)