I drive a 84 vf700, I have the clymer manual for it and I was looking at how to add air for a more firm ride. I'm 220lbs and when I first sit down on the bike it lowers a little from my weight. Any tips to add air to the shock for when I have my girl on it with me or is it OK. Please help she been begging for a ride but I'm just not sure on all the weight.