So, I got a disco fill port and valve with the intention of putting it into a 2260 tube on my 2400KT so I can bulk fill. The disco fill port will not thread into the 2260 tube end however, what am I missing, I thought this lined up fine? The 2260 tube seem solid, it's fairly heavy steel and it's marked 2260. Anyway, I would be thankful for any help and if I should be ordering a different tube to add some capacity when bulk filling let me know what tube may work better.