Maybe my question was not clear. I am trying to figure out exactly where the 2.5-3" at the wingtip is? I was assuming it was at the ends of each wing and now after reading Tom's reply I think the answer was struck upon. Looking at the manual once again I see no holes for the wing tube, etc. Just didn't notice that at 11pm last night. Anyway thanks for the answers guys.

It's not that I'm trying to re-invent the wheel or anything, I am using a GP balancer and wasn't sure if the 3" was at the root or not. I see now that it is not. Just don't want to take a first flight with my CG 2" too far back (disasterous)!!!