I own an older Redfield Wideview (late 70's) that has recently gone myopic on me. Looking through it you can see the edge of the lens and instead of a round field of view, it is elliptical. The lens has rotated in the tube.
I called Leupold. For a $70 flat rate and $10 shipping PLUS not less than an 8-month wait, a warranty service provider to Leupold "for all Redfields" will restuff the tube and send it back, provided I ship it to them at my cost and prepaid. I do not know if this Leupold warranty extends to the new Revolution line, but suspect it might.