Has anyone ever read anywhere to set fork sag while standing? For example, if I set + air on my Reba to 80psi, I only get 7-10mm sag while seated, but I get 17-20mm sag while standing. Thats a big difference. I'm shooting for 20mm, but at 80 psi, I'm already using almost half the air RockShox suggests (115-130 psi for my 175 lbs.). Any suggestions?