Hey, Im new to all theis dirt bike stuff, but on the specs for my crf 230 it says the front forks are air adjustable. Where do I put air in??? There is no stems on the forks. Underneath the tubes of the fork there is an allen wrench bolt, is it under those maybe??? Also If I do figure out how to put air in them how many psi do I want, I weight about 115. Thank you -Tim