I've got a pair of Tokico 6 pots and fitted em Ok to me Zed, bled em thru and even left em over night with a rubber band holding the lever in to allow air bubbles out (just in case).
Had a test ride today and the brakes work OK, but after a blast up the carriage way, braked hard a few times to bed em in and they hung on slightly (binding) and then due to heat, applied them selves harder until I had to pull over ( emergency stop
). I checked em visually at the road side (HOT) and after a couple of minutes they'd cooled enough to stop binding & continue normally 
I proceeded cautiously (120mph
) and tried braking again. It was OK first few times then they did it again as (they heated up?).
What going on
Air in system expanding & holding them on There's no leaks and lever seems to operate properly, returning OK!