Thats a touchy area. You can't be the shister and expect him to cover your mistake. But you also can't eat that much cash. But, from the sound of it, this guy is a cheapskate. So your going to have issues either way. I'd say get whats on the original qoute, plus a restock for the MA rack, and chalk it up as a learning experience. We've all done it before. It hurts, bad, but you know what. You'll never do that again.