All the truck brands have that in their warranty, it really depends on the person you talk to. My snap on dealer sees me once every couple of weeks at best, and is really lenient with stuff he knows I didn't buy. He is a tool guy though, not just some hard up a$$clown. He knows I own speeders and stuff that are from the 30-40s and obviously I dont buy much new. I have talked to him about warrantying some stuff before and he even said "I will warranty it for you, I at least know your face because you buy stuff. I have a lot of people come on here with buckets of broken tools and have never seen them before and they want to empty my truck out. I don't warranty it for them simply because than people like you and the shops I go to have nothing to take"
Your handles are a different situation, and as long as the box is not 20 years old and beat up, I think they should warranty it. Even if it changed hands 20 times but was only 6 months old, if its a common issue, it should be warranty.