That was my review & as I said I have a pre-porduction model. All my findings were sent to Evanix for correction, Similar to a beta tester for software. The issues were the holes in the magazine were a touch small for 2 of the pellets I was using. The JSB Monsters & 18gn heavies. The problem was because these pellets have wide skirts they were rubbing the sides of each hole, so I made the hole bigger. All other pellets fit fine. The stock lined up with the tube fine. from the factory there was a 1/8" gap @ the fore end between the air tube & stock. The gun worked fine, I just didn't like the gap so I used a dremel to remove a couple of wood shavings on the inletting to get rid of the 1/8" gap. There was nothing wrong with the stock hammer spring I just wanted a lower fill pressure, a few more shots & 40fpe instead of 48-50fpe the rifle shoots stock. In stock form the gun is shooting 48-50fpe for 20 shots then the next 10 go down to 40fpe. I now get 30 shots between 38-40fpe w/ Barracudas/Kodiak pellets.