i'm might b a bit fatter than you, but i find 20 psi is about perfect, hard enough to to "rim" it to often, but soft enough to give aswell as allowing a smooth consistant ride. Unfortunatly axles bending is something ur need to learn to live with thou, There are options to reinforce them which increases there life span drastically. Just remember thou that the bend in ur axle has saved an ammount of injurie to ur spine, on a heavy landing the force needs to go somewhere