+1 on what syncerus said about Leupolds customer service and their lifetime warranty. Older VariX II Leupolds did not have a locking mechanism on the elevation & windage knobs, but used a slide adjustment that sometimes would move under recoil or being dropped. I was taught to use the plastic handle of a screw driver to tap the adjustment knob after moving it to "settle" the crosshairs into the new position. Give Leupold the chance to make it right.
I had a 4x12x40 A/O Swift Premier Grade for a long time. Decent glass,about 90-92% light gathering rating, never had a hitch with it on any of the 4-5 rifles it ran on, and always held Zero. Quality wise it is about like a Leupold Rifleman/Nikon Prostaff 1 and in that 4x12 model ought to cost high $100's to $200 new. Look at SWFA's website for accurate pricing and a complete description. Another online vendor that sells a lot of Swifts is EABCO.com.
Remember Aesops Fables of the "Scorpion & and the Frog's" crossing the river...
... we must hang together, or we will ALL hang seperately, Ben Franklin..
Those who fail to learn from History are doomed to repeat it,Santayana