Its probably not real easy in Sweden to go to parts store and get a plastic alignment shaft. I have made an alignment shaft in the past using a wooden dowel that is the same size as the pilot bushing. Then you can wrap electrical tape tight around the shaft to build it up to the side of the clutch disc. This method will get you real close and you should be able to slide things together. It also helps to debur the new clutch disc splines, make it so the clutch disc slides right on the splines of the input shaft.