Thanks Mike, the hayfever was bad for both of us while filming it a couple of days ago. The Firecat has a nice rail you can adjust so you don't have to rezero a scope as much.
you have said it you self in a different vid. the Chace-Star 150, is a excalibur clone, but do not have the "string stopper" that is pateted... but you should be able to just get som solid rubber and glue it in the T cross so it bearly tuches the string in not cocked.. and get the same effect.