I didn't like the arm that pulled the rest into position being attached only to the 200 thousands wire that supports the arrow. I modified this with a oil lite bushing going thru an alum. support. The arm that pulled the rest up was then attached to the oil lite bushing that had a solid support. This worked out great and could be a good modification for GKF. The one thing I couldn't get around was the noise. I tried several things to quiet it down on the shot but got frustrated. I also wasn't happy with the spring or the tubing and used the cord by itself. I shoot a Parker feather mag II and just could not get it quiet. Other people have had good results with the Mirage but it just didn't happen for me<img src=icon_smile_sad.gif border=0 align=middle>. Don