Last day for the auction, Vash?
Update: Relocating the front scope mount seems to have cured the problem. No more wild flyers. I can now grasp the rifle right over and around the front mount, directing the pumping force straight down through the mount.
It won't shoot with the RWS 34, but it is certainly "rat worthy". It groups into about 1 1/2" at 30 yards for ten shots, so that will do. I've only tried two pellets in it, so maybe there is another one it will like better. Right now it's Crossman Premier round noses. It hate the H&N's that RWS likes so well.
I still have to get some of the extra heavies this thing is meant for. They are on their way, so we will see how it does when they get here.