I'm new to the club,i'm 19 yrs oldand have watched RD since i was little. I can't understand something lister say's in back to earth in the dvd shop in episode 2. Lister say's when reading the cover of the back to earth case that back to earth takes place after series 10 but there is only 8 series. Also later on in this episode they go to that shop looking for answers, when they get inside they see a bath tub which the shop keeper say's is from one of the set's in the 9th Series used by lister. Agian there is only 8 series. Am i missing something? cheers.