New guy here from NW Georgia,Looking for advice on repairs.I have a Crosman 1077 CO2 rifle that the gas leaks out as soon as it inserted.I received new seals from Crosman but was not successful installing them. I also have a Tanfoglio Witness 1911 C02 pistol that won't fire with a new C02 cylinder installed.Just trying to see if it would be cost effective to have them repaired and where to send them. Thanks