A quick tip for people having problems printing the line supports like I have: put a small raft under it. Doesn't take much longer, gives the supports better ground to print, isn't harder to remove (since it's not touching the actual part) and also holds the parts of the set together so you don't confuse them as easily.
I don't know why I can't print the line supports, they tend to wind themselves up from the bed, maybe because they are so small and one-directional. Or perhaps bowden extruders just fck stuff up in this special case. But now it works and I can get finally print stuff!