Okay.
This is about where I run my slipper on a normal Fun day. 1mm off flush. I'm protecting my idler this way. (remember, I've gone through 2) This slips pretty good. And what I mean by that is it protects the gears and gives me enough power to do anything I want minus a wheelie. It warms the housing. (before the spacer, it used to be hotter than the motor damn near) Pointing out it's only 1mm from flush. I have days of travel left to lock it down as I stated previously for the wheelie idler blowing action.
This is my Slipper assembly. Those pads are my original pads mind you. The dust from the belt housing gets all over them and makes it look bad. Wipe them down and a little sandpaper and they're good as new.
This is my Thrust bearing.
1: The collared piece
2: Bearing
3: Steel washer
4: The additional teflon washer
That washer turned my truck into a wheeler producer. No belt rub from moving the pulley forward. I'm on the original Belt. Etc.
I loved my truck when I put that spacer on it. Then I fell farther in love when I pinned the truck. There ya go. So ya know.