I had the same problem with a Matco dealer on a clip spade tool. He asked how I broke it. I told him that I ran it over. He told me that he would not replace it. I told him that I would have it replaced for free, by law, regardless. I went into my toolbox and got their unconditional warranty replacement mission statement out and he still would not give me a replacement.
When he came back the next week, I had a new one and he threw a fit and told me that he was going to inform his regional manager that I should have to pay. I don't know what the deal was with him, but it killed tool trucks for me.
I'd say about 1/3 of the tools in my box are home made. I've broken a few Craftsman sockets here and there, worn out pliers, etc., never had one problem getting one of the tools replaced, no questions asked, through Sears, Ace, K-Mart, etc. I've found shattered screwdrivers on the sidewalk, bent wrenches on purpose for clearance and turned them in... Call me crooked, but if you offer an unconditional warranty on a hand tool, people will take you up on it.
My new favorite place to shop is Darn Tough socks. lifetime, unconditional warranty on every pair. One hole, you send it in with its match, they replace the pair, no questions.