I had a mate wrap my knees yesterday and he got something like 9 revolutions using sub x. Probably could have gotten a couple more.
Anyway, carryover was great. I hit six at 407 lbs and only stopped there because of my head cold stopping me getting enough air to get tight enough. Video is on my log if you're interested. Light by your standards but decent for me.
With the narrower stance I'm confident of going over 500 lbs in the next few months.