Hi, Last week I bought a Titan Aero extruder because I want to make pieces with nylon. But when i made some tests with other material, PLA, sometimes the extrusion doesn't work. I tried a lot of things, like changing the material, increasing the extrusion pressure, and even removing the retraction parameter. I would like to know if you can help me, since I have been dealing with the problem for several days and I cannot find more information on the internet. I will try not to squeeze the heat sink too tightly to the extruder to see if that changes anything.