Door lock cylinder, eccertric wont fit nicely into door handle Options

[Tking327]

i bought a new door handle and new lock cylinder from auto atlanta. The lock cylinder is porsche w german on the package insert. The handle i guess is after market knock off. This should not be hard, but i cant get the 'eccentric' (the cylindrical lever with a protrusion that is responsible for the unlocking function) to fit smoothly into the receptacle on the door handle. The fit seems too tight and i cant get the small square male and female alignments to mesh/lock in so that the countersunk head screw can engage and hold everything together. Any ideas? Why is the fit tight? It would make turning the key difficult

Thanks! Tom King, Denver