Hi Frankie,
You were gone so i couldnt answer you.
You can get a syringe, pull the cart stuffing out with a tweezers, put into the syringe, squeeze out the
juice into a small bottle, then thin it out with a little water, or VG or PG.
Heres a link to some vids that explain it.
http://www.e-cigarette-forum.com/forum/tips-tricks/2542-how.html
Its a little harder with a 901 then the pen, but it still works.
Hope it helps