As to the bolts any will do, available at local hardware store. I would go with brass or SS. One or the other MAY have supplied bolts but they often get misplaced or are the wrong length etc. SME for one suggests the local hardware approach, nothing magical about any original bolts I have ever used and that is a lot. You would probably be better off to go with the aux adaptor but there are other expediencies. Blutacking a coin to the back of the counterweight is perhaps a little low brow for an arm of this expense but has been known to work. I am sure that Graham users will have suggestions.
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