Just picked up an IG to try out. From initial reading, it sounded like the IG had some added weight in stock form. I had all my YT's matched from bosworth, and they're all 332 unstrung. Need to recall what a stock YT is. The IG I have weighed in at 323. Balance point is 12.5" from edge of butt cap. I believe that equals 8 points headlight. (13.5" center racquet= 1 inch headlight) Gonna try rpm blast at 54lbs since that's what I've mostly been using.