The only Dillon product I own is a bottle of brass polish for a tumbler.....so I can't help. Maybe Tyler can help if he understands what you are asking. I didn't think Dillon even used a spring tube on the case feeder....or are you talking about some other spring?
You might do some measuring and give some information.....I.S. diameter, O.S. diameter of the spring tube.....then Tyler can tell you what adapters he has that might fit. More information the better....what calibers are you trying to feed.....