Good evening. I upgraded my Maker Select v2 to Ramps 1.4 Marlin1.1.0 RC8 with BLTOUCH and Titan/E3d. I have yet to get a successful print... but, my question is this. On the v6 hotend with titan extruder I cannot seem to get tpu filament to extrude. It pushes pla just fine. Tpu clogs in the nozzle before ever coming out. I have run temps from 190 to 260 to try to extrude it manually, thru octoprint and connected to my laptop. The extruder just clicks as if there isn't enough strength to push it thru. I also tried nozzle sizes from .4 to .8 to no avail. Any suggestions ? The tpu is getting into the hotend, just not getting out. Thank you in advance.