Easy way to check your alignment is lower a top punch of the correct caliber for the die (so it will slip inside) down until it does just slip inside and look closely at the punch-to-die alignment from all angles. The tendency of the 45s is that the die gets pushed toward the reservoir as the set screw is tightened. Two of my four do this, stretched by previous owners. Not being a machinist, I simply cut strips of brass shim stock with scissors and shim the back side of the die. It's a pain to get the shims in there sometimes but it sure helps.