I had my threadless fork threaded at a local shop. My problem is, the quill stem only goes down about half way. When you take it apart, there is definitely enough room for it to go down further. Even if I take the bottom part of the stem off it still goes down the same length. I can look down the steer tube but I don't see anything impeding it. I took it back to the shop and they couldn't figure it out either. They said maybe I could hone it out a bit? The bars sit at a decent height, but I just want adjustability if I ever go with different bars. Any ideas?