Doesn't function on my gen 4 - Advantage Arms Conversion Kit for Glock 26/27

just received it and to my disappointment it will not work with the recommended or any ammunition or with any of my four magazines of different capacities,I'm get 100% light strikes and after carful inspection and testing i determined the firing pin spring compression in relation to the recoil spring was causing the slide to not return completely into battery which is by design working in opposition to the recoil spring, the recoil spring assembly is also not fitting flush which sticks out the front approximately 2 mm, if the recoil spring is the wrong part and is too light it would explain everything, pending resolution