I'm totally confused...the more I research the problem the more confused I get!  I have 2 ssd cache drives.  one is 1TB the other is 250GB.  My cache device says I only have 625GB with 249 used and 0 free.  When I invoke the mover nothing seems to work.  My Sanbnzbd keeps pausing because it says my drive is full.  I'm hopelessly stuck...Thanks for any help!