Most of the time the issue is white noise, in other words we cant see it. Is your press setting primers 100% everytime? If it is it definately is not a timing thing. Remember if primers are not set completely this will cause a major ejection issue. I had one where I put my big primer slide on a flat surface and realized it had got a slight bend through a malfunction. I tapped it flat gently on my vice anvil " voila" problem solved Hornady shippd new parts. The issue you are having sounds real familiar to me.
Let us know how you get on? I encourage any reloders who live close tho this guy who have a Lock and Load to give him a hand. Bring it to Tampa Ill have you running in a jiffy.
thewelshm