Next I moved all the bits and pieces from the old spindle to the new. To do so I had been grinding off the other end of the spindle (opposite to the sprocket). Note that there is a ring inside the outermost part. After moving over all the bits & pieces, the outermost part did not want to go over the new spindle and I carefully drilled a little bit into it with a 9mm drill-bit, but not completely thru - I just removed a tiny bit of material, ...