250 disks in 750 drive ?

Yes , I think you are right that it is the pot , I did order a new one .. waiting for it , Sample processing takes longer time with 750 ? But if I use an 250 Zip-disk in the 750 drive , is it the same as having a 250 drive then? , It would give me the option to choose..I guess .
BAD ENGLISH ?!
HI!