Double Bell Winchester M1894 : Problems !

Bought this blaster from iHobby.com.au. It came over night under expressed post. It looks good and feels good like the real thing. However, not without problems: 7 out of 10 shells have razor sharp edges at the base. These shaved of the paint and also metal parts of the spring plate where the shell load. The CO2 chamber is too tight. One of the two CO2 canisters got stuck and refused to come out no mater how I tried. I believe even if I could get this out (which is impossible now), the next time, it will have problem again. Note that is is the standard 12g C02 canister I bought from Tac Toy Darra. I have used them for my Golden Eagle mags and Tac Toys guys use them for their pistols and riffle blasters. Hope this information help future buyers and hope that iHobby honours what it's doing. I will keep you guys updated about the progress. Cheers