[Dos Tazas Jaime]

Alan, thanks again.
Yes I think that ordering to Germany (or any other country in this case) a cheap accesory (such tube and adaptor) is not a good idea. The shipping cost may exceed the product cost, no sense.
I wonder if one may make some DIY trick. But in the other hand, I think the tube should be FIT EXACTLY in the hole, no much place here to do “shit-hand-made” tricks (sorry for my creative bad english) :=)