My Big Agnes tent suffered from zipper issues. It has a very light weight zipper in the tent body that needed to be adjusted about every third day. The tent is at the manufacturer now for evaluation and possible zipper replacement.
Seam Grip, a tube of Zip Care, and a box of Tear-Aid Type A added to our repair kit. Amazing what you can do with this stuff.
Speaking of warranty, the lid handle on our several year old GSI cookset broke on the trip. BJ found replacement lids on their website but no shops carry them. A phone call resulted in an immediate "we'll send you a new lid - no charge" response." We've always liked their gear, now we're really impressed with the company.