Thread: leupold warranty

Ive got a vx3 about 12yrs old but it seems to have losing its clarity. My vx1 seems clearer to look through. Would it be covered under warranty? Also i see a few people on here have sent back direct. Is it easy done, Do you need to email them first etc?
Not far away from taking back a pair of bino's so i thought at the same time i might do both.