I'm on discord and even then I can't get my order in fast enough before they are sold out, even though I have accounts set up with my CC on file..very frustrating!!
Like others have mentioned, the Lee factory crip die is what I have used for over 50k rounds.. I use redding seating die, I think any reputable seating die will work..
If I read your post correctly it Soudns that you are seating and crimping at the same time. I would separate the seating and crimping in 2 different stations. Seating and crimping on the same station can cause all sorts of issues..