Posting this in case some people are not aware, but MK7 has released an update to the APEX 10 priming system.
The original design would allow the bearing to move in the event the alignment pin crashed into the primer disc. This would cause things to get out of alignment and binding (see Step 4 in the linked document). The new disc has additional clearance under the disc to deal with debris and prevent binding in case of a crash.
I have the new disc installed and realigned the bearing according to the document and it is working 100% better. I have been processing more than loading, but it has processed about 5k without binding and loaded about 2k of 9mm with no smashed primers. There is some adjusting to do, but this has solved the issues I was having.
https://www.markvii-loading.com/amfile/file/download/file/32/product/1859/