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The issue is mainly with the manufacturing process Hornady uses to build its press, mainly the frame itself. The frame is cast, and then most likely painted, and finally machined in all the places they deem it critical. The place just under where the primer seater punch (part#26 in LNL Manual) sits is not deemed critical enough to machine flat, and for some other reason the seater pin itself is machined to a point. So what you end up with is a critical machined part (the pin) using red paint and rough cast iron for a depth stop.
The same red paint and rough casting is what the nut (also included in part #26) rests on when it physically stops the lever arm from rotating when you are pushing forward on it to seat the primer.
During use, you will wear off paint, and it will eventually change your primer seating depth.
Hornady could fix this by machining a flat spot in the frame where the nut and pin contact it, and making the pin itself flat on the bottom, instead of pointed.
Few things for you to try here, method 1 worked for me:
Method 1: Put a drop of superglue in the divot created by the bottom (pointy) side of the primer seating pin. If its too much glue and it has made the primer seat to deeply, simply remove glue with acetone and a rag until it seats to the desired depth. (Be careful with acetone, it may remove paint as well.) !!!!!MAKE SURE THE GLUE IS DRY BEFORE YOU CYCLE THE PRESS!!!!!
Method 2: Use a mill or file to remove about .003 thickness from the part of the nut that contacts the frame. This is what I was going to try if the superglue had not worked.
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