Had to send in a Gitzo tripod head that wouldn't tighten any longer. Bought it some time ago when they had a "Lifetime Warranty". Well, that warranty isn't honored any longer by Bogen, the jokers who have Gitzo now. They said it was 'worn' and I had to pay. Oddly enough, the Velbon P270 tripod head I have has a lifetime warranty & I have had it serviced twice, at NO CHARGE. Both times I informed them the problem of broken handles was my fault, not any kind of defect. The problem was me falling down on scree & talus slopes & breaking the handles. The Velbon people fixed it both times with me only paying shipping. Their response to my surprise was 'these have a lifetime warranty to the original purchaser'. And, I was the original purchaser. This is more a frustrating experience than anything constructive, but if you are looking to buy, be aware Bogen doesn't back the products.