When I tie smaller caddis, in sizes 16 or 18, I'm having two problems that seem related. First of all, the elk hair isn't set firmly on the hook and likes to turn on its own, even though I have a thread base beneath it. (Could this be the result of using too much elk hair?) Secondly, as I try to secure the elk hair with more wraps, I'm leaving the fly with a head that seems too big. Anyone have any ideas on how I can nix these problems? Maybe a sparser wing? Or would greater thread tension do the trick? Thanks in advance for any advice.

Best,

Dave