Thank you for calling Dillon Precision. There are currently 17 callers ahead of you..

[asmo]

Having a really weird problem with my new Dillon 1200 trimmer - specifically if I put the die in the only place where it will actually contact a case then it re-sizes the neck to horrible dimensions that no longer match a case gauge - so I decided to call and see if they could help me out. Got the message that I was 18th in line - hung on for about 45 minutes and then had to go do something else. Never moved in the queue..

I love Dillon and their CS is awesome, but I am guessing that Santa brought a whole bunch of people new Dillon toys for Christmas.. Oh well, try again tomorrow.

[JM Ver. 2.0]

When I clicked on this I expected a bitch fest...

It's damn nice to see someone that isn't pissed off that they weren't put ahead of everyone else.

If I could I would shake your hand.

Sent from my teepee using smoke signals.

[Great-Kazoo]

Having a really weird problem with my new Dillon 1200 trimmer - specifically if I put the die in the only place where it will actually contact a case then it re-sizes the neck to horrible dimensions that no longer match a case gauge - so I decided to call and see if they could help me out. Got the message that I was 18th in line - hung on for about 45 minutes and then had to go do something else. Never moved in the queue..

I love Dillon and their CS is awesome, but I am guessing that Santa brought a whole bunch of people new Dillon toys for Christmas.. Oh well, try again tomorrow.

Readjust the die for less contact on the shell plate. I had to dick around with mine 3-4 x before it was right. I had the same results as you, what a head pounder. The finished case - case gauge was no where near in spec. Once i stepped back for a day or two, it was easier to set up.
Slightly OT, i ran in to an issue with the die coming loose, AFTER i spent more time than i wanted to get it right. I used one of the dillon die locking nuts under the tool head along with one on top. That trimmer doesn't move , finally.

[Hoser]

You can call me and I might be able to help. I have a fleet of Dillon trimmers.