This started out by me buying the wrong tier, i got one for the regular bottle trees. while looking for the right tier i learned that something I've been wanting for a while would not work on the economy tree, the vinator! it would cost less to throw the tier i got away then to return it, so i modified it to work on the economy tree and vinator. all you have to do is cut the tube off the bottom flush with the widest part of the tier with a hacksaw as perfect as you can. sand the bottom flat. in both styles the inside bores are so close they fit snugly with out any glue. then section a little out of the tube you just cut off, enough to fit it in to the bottom of the tier with hot glue. finally hot glue it to the top of the economy tree. and there you have an additional tier and an adapter to a vinator if you wanted one.