I haven't had a need to use the above tool for a while. But it worked like a charm when last I used it. I loaned it to a friend, since then and haven't even looked at it. I had a small job to do the other day and when I tried to fire some nails into metal and cement block, the cartridge wouldn't fire. I tried a number of them thinking I had gotten some duds. Still no luck. I thought maybe the firing pin is broken and tried to disassemble the tool. There is a nut on the top of the handle that I think needs to be removed to gain access; however, it just turns. The nut is smashed down pretty heavily on the rod that it secures and don't know how to get it off yet. I would have to clamp the plastic handle and then try to use a wrench on it. It could well ruin the plastic handle.
Anyone with some suggestions as to how to proceed on this? Another site to go to? Thanks,
Leif