Looking at the pics, it looks like your gears are offset meaning they are not set correctly, you might need the shim kit to space out the pinion or spur gears, I have a extra shim kit that came with my Nemesis, so if you need it I will send it out to you. Try setting the gear mesh buy loosening the bolts that hold the engine to the engine mount. put a piece of thin paper between the pinions and sprur gears and then proceed to tighten the engine bolts. This might take a couple of tries to get it right, but the clutch bell and spurgear should spin freely without any binding. If the gear mesh is set correctly, you still might need the shims to center the pinion and spur gear. My nemesis came with instrutions on how to set the mesh, I will see if can find this online and attach the image