Discovered a helpful trick yesterday while replacing the PTFE tube on my Budaschnozzle 2.0. The tube I ordered from Mc Master-Carr was just a little too big to fit into the hotend. It was .27" in diameter instead of .25". While struggling to find a way to make it fit, I realized that the inside diameter of the 1" long nylon spacers I had lying on my work table were .25". So I hammered the PTFE tube through a couple spacers a few times, and that shaped/shaved the tube to proper fit. Not only that, but it occurred to me that because of their manufacturer straight cut ends, the spacers could be used as a guide when cutting my own PTFE tube. Hopefully this helps out someone else in the future.