Fabrication Instructions:
12 series 15 series 21A/500 series
 21B/500 series
22T/150 series

22S/100 series

26T/150BF series

 26S/100BF series
27s series 28/650 series 29/550 series 31 series
32 series 42 series 43 series 44 series
48 series