aussieG daY! all further more to the weight in drum debate 2 of my 3 s/b 45's have 4 holes in each drum, 2 small and 2 bigger holes. The other one only has 2 holes the bigger size. My first thought was its something to do with the manufacturing process! the first scott bonnar i bought the older style chassis the rear drums have 2 holes in each drum or did the weight only go into the 20"model 45-0431 i think not. Attached are 2 pics of the before said model regards steve...

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