Who has used them? I bought some to try out thist year and shot them. Fly great and have a 2 3/4" diameter, sounds great right? Here's my "problem". When I assmebled the heads, the set screws that holds the blades to ferrule are tight, but the blades seem to have ALOT of play/movement in the design. Is this normal? I liked the idea of the big diameter, but with my luck I'll break both blades off on entry. Any suggestions or experience with them?