I had my suspension set up by a specialist a few weeks ago. He got it dialed in really nicely. He suggested I raise my forks by 8mm, which I did. I like the improved turn in. He also suggested I change my fork oil (likely long overdue) and go to a 15wt, then adjust compression and rebound to accommodate the higher viscosity. Seems like a big jump without changing or modifying other components of the suspension. Anyone have experience with 15wt?