Any adjustments I've tried have been in the name of getting out of the hole. I figure if it hooks well off the line, the rest of the pass is what it is when the pedal is buried in the floor. That said, I started with the Caltracs in the lower hole, just touching the spring, but it would just blow the tires off. I played with rear shock settings and it didn't seem to help, so I tried the upper hole which made some improvement, then added a little preload, which made a little more improvement... but it still spins. I'm sure there's more improvement to be had with more rear shock adjustment. Front shocks are set full loose on rebound (which isn't as loose as I thought they'd be) and full stiff on compression.