There appears to be a machining burr, or catch at the end of the DSH heatsink. Where the PTFE should exit the heatsink and come in contact with the heatbreak (both paths). It catches my PTFE right there, flush at the edge of the exit and prevents the tube from fully seating into the pocket of the heatbreak (which would create a small chamber to catch filament).
I intend to ream the end out with a drill bit, but wanted to know if anyone else was seeing this? Anyone else already resolve this issue?