It looks like the firewall to drive plate will be 6.5"+-. From building other Edges it would make sense but until I have it in front of me ? Throws to start with, low rates a same angle (not measurement) as a Hangar 9 (120 size), High rates to my liking. I do not have a problem with this. What I do not understand is why Max would not have recommended low rate amounts. Think of the person that buys this thinking "I have my Goldberg Tiger II mastered". With out help from someone that has an large Edge trouble is at there feet!