They say you need proof of purchase in the case of warpage ! that sounds fair to me ...
McDermott Handcrafted Cues warrants its pool cues purchased from an authorized McDermott Cue retailer or distributor to be free of defects in material and workmanship, including warpage, for the lifetime of the product. McDermott will, without charge to the consumer, repair or replace your cue, provided that the claim is accompanied by a copy of the original sales receipt from an authorized McDermott dealer. McDermott does not warrant its product against damage caused by third parties. This warranty does not cover replaceable items such as tip, finish, and wrap. McDermott will fix such items, however, for a fee. In addition, McDermott, at its sole discretion, may void this warranty if there is evidence of abuse or mishandling. To obtain warranty service on a McDermott product, return the product to an authorized McDermott dealer or directly to McDermott.