I have had two benchmade contegos now and both have had lock failures, the most recent was on Friday and it resulted in a pretty bad cut (to the bone on my finger). I have contacted benchmade and they want me to send the knife back, they said that IF the injury was at the fault of the knife they would cover the medical costs. The knife has some strange characteristics though it says M4 on the blade instead of CPM M4 like my other one. The blade tang also has several imperfections and a part of the lock face is scratched. How do I keep myself from getting screwed here?