Complete misery with my bowden-fed Titan on the BB 1.0. Initially I just could not get the filament to enter the hot end, it was getting stuck at the heatbreak from what I could calculate it. I happened to have a spare heatbreak, so I fitted that. Eventually I managed to get the filament fed all the way to the hot end. It was quite clear that as it got to the point of the heatbreak, there begins a horrible ratcheting sort of vibration. This only thing I can put that down to is the teeth mark on the filament from the Titan, but that's really no different from the direct. So anyway, I got one print off. Left it. Returned to it this morning, heated the hot end, and COULD NOT remove the filament. Won't push, won't pull. Any ideas?