What year GG are you referring to. The conventional wisdom on this board is that they got "better" in '05 and better yet in '07. If someone doesn't chime in I guess I'll have to try and measure it myself.
I do have rake/trail specs for my '91 Husky 610... 28.5 deg. and 4.72" and it does not turn well at all. That's actually what I'm aiming to correct. It's obviously not all rake and trail either since the 250f honda below has a steeper head angle and a longer trail.
And this is mildly interesting. These are the only r/t specs I found online in a quick search. None of the european MFGS had r/t specs that I could find. 2 smoke specs from Yam or Suz. did not list rake and trail.
'09 Honda crf 250... 27.9 deg. and 4.9"
'09 Honda crf 450... 26[sup]0[/sup] 52' and 4.5"
'09 kx250f............. 27.7 and 4.8"
'09 kx 450f............ 26.7[sup]0[/sup] and 4.6"