Hey all, glad to be back online and bugging all of you again! Anyway, my question is this: I recently was PIF'd a vintage slant, which is in awesome condition. The thing is, the bottom part where you'd screw to make it tighten or loosen up wont come off. Now, I was under the impression that it was a three-piece much like a Single Ring or a New Improved. Am I wrong? The top piece comes off like it should, but I'm just a tad confused. Should I be worried?