The return spring on my case feed shuttle fractured. I checked my spare parts box and that is not one of the springs in the kit. A work-around was fashioned within an hour, but it was only a temporary fix.
When I looked at the Dillon website to get the 800 number, a BIG front page asking for extra patience came up. I'm thinking, hmmm these guys are busy. Then I called the 800 number and was shuffled to hold for 10+ minutes, where I decided the "call-back option" was starting to sound much better.
When no one called back in 36 hours I started thinking, hmmm these guys are very, VERY busy !But I had to get my part on the way, so I looked for another solution. From an online parts catalog I got the PN of the spring. I really didn't need more than 3 minutes of their time, but that's apparently more time than these very, very busy people had.
I decided to use their "Open a Tech Support Ticket" option, which is an email directly to Dillon Tech Support. I kept the message as lean as possible. "Case shuttle spring broke. PN 13937 "Case Insert Slide Spring". Then my full name, address, email, phone number, and customer number. (This option also allows photos to be attached, if needed.)
https://www.dillonprecision.com/technical-support.htmlBoom! I got an email response within 2 hours and the repair part in 5 days. So if you need repair parts, and know the part number, then this is a method that will get you straight through with the least amount of trouble.
Hope this helps.