The wad guide holder clamps onto a 5/16 rod that runs down the front of the press. Low on this rod there is a C clip that drops down and contacts the base of the press. But further up on this same rod, there are TWO grooves and another C clip. For 2 3/4 inch shells the C clip should be in the lower groove. The wad guide holder should be resting on this clip. If this is true, there is about 1/4 inch clearance between the wad guide holder and the latch trigger rod.