Hi all, I am new to this forum and relatively new to air guns in general so I hope I'm in the right place for this question. I like just to go out to my backyard and shoot and liked it enough to invest in a good used 10m gun (small backyard). I ended up with a Walther LGM-2 that I enjoy shooting thoroughly. My question is I think I need to start performing some basic maintenance because when I got this gun used a couple of months ago, it cocked and held air great and it shot great. Now when I cock the gun, I can hear air coming out of the breech until the cocking handle comes down 3/4 ways then I can re cock the handle to the full out position and push down to load up the air chamber without air escaping from the breech. I can shooting the gun right now the way it is but I don't want to do any damage to the gun so if anyone have any suggestions or can point me to a site where I can get dis-assembly instructions, I would greatly appreciate it.
Thanks.