You talked about understeering in your original post. Tyres play a huge part in anything which is suspension related. Hence the suggestions re tyre pressure. The whole bike is kind of always related to the other bits so yes you are missing something, as moving the forks thro the yokes is perhaps not a great idea?????
And the high tyre pressures will tend to add to the understeering.......

__________________
(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....