Material "does not fit"

• base plate diameter, position of holes for fastening screws, direction of wire exit, conflict with oil seal
  here please send us photos (please see info on photos) and if possible dimensioned sketches
• direction of work (clockwise or anticlockwise), see info on direction
• rotor (most frequent and most problematic issue):
  - rotor entry opening may be too wide so that rotor drops to bottom without getting hold on rotor
  - rotor sits at about a correct height over plate but wobbles on crank, does not get a firm grip
    (this might be because you forgot to pull the woodruff and this might be because the taper (the angle of the inside opening 
    of the rotor shaft) is wrong or the shaft is heavily damaged.
  - crankshaft can enter rotor only partially. 
    if so, try to find whether it still does grip correctly and not wobble because of (see above) taper problems
    also, if the shaft can enter at least a mm into the rotor, check what the distance (clearance) between bottom of rotor drum 
    and top of installed powerdynamo base plate is
  - rotor might fit well, but cover can not be closed over it
  - also it may be that there is a problem with the fastening nut/screw. 
    either shaft protrudes into nut/screw opening'
    or threading does not show enough to securely fasten nut
• also there may be other issues as screws to long/too short, with wrong threading / nut not fitting, stock nut not fitting
• there may be wire exit problems. that the wires may be too long or too short for your installation ideas is unfortunately something you will have to live with.