Nikon 6-30 scope - Nikon Monarch 5 6-30x50 ED SF Rifle Scope

I could not get the scope set on paper in elevation at 50 yards- had it bottomed out and was still shooting 18" high. I sent it back to optics planet for a replacement. Have other Nikon scopes that work flawless and hope this was just a miss set from the factory- will re-review once replacement is sent and sighted in