I may be a little lost but I cannot find the source to get extra tubes (all three shapes) did I miss the source?
I tried to buy some and they told me that they would be out of stock until the 18th. Perhaps see if the dimensions are the same as the 2007 season tubes? That could work as a good alternative if it all comes out the same.
Here is my post in another similar thread. I propose that we use that other thread to consolidate this discussion.
Sincerely,
Andy