Received my new Buck Mark Contour yesterday and did the first break down, clean and lube. Watched several videos before I attempted it. I was very surprised at how tight the top screws and the barrel retaining screw was. They had thread lock on all of them. I had to use a heat gun on the barrel screw to get it to break loose. I put so much torque on the screw that I really thought that I was going to break the allen wrench or strip the head before it started to turn. But in the end all turned out well. I also did the spring flip while I was in there. Really wanting to shoot it and see if it lives up to all they hype.