Bought some 808 WOW blank cartomizers from V4L. Also got a hold of what is suppose to be a 510 to 808/901 connector to work with my 510 connection. Don't know exactly what the problem here is, but I can't seem to get a draw from these carts. It's like sucking into a closed straw. This is the first time I've tried to use the 808 cartos. Do I need a different connector? This connector is about a 1/2 inch long and seemed to thread hard onto the cartomizer. Maybe should just stick with the 510's.