I am getting a new t tower for my Christmas gift and it will not come with shanks. First, I assume that the shanks from my round tower are not compatible, is that true? Secondly, where is the best place to get shanks for a good price? I looked at beverage factory and for a ss shank it is nearly $50 each, that seems high since I'll be buying 3 of them. I've never really shopped for these since they came with my last tower and feel a little lost, any help is appreciated.