the LS-30 sticks used the same ones. ( Matsushita AH76515 , impossible to find ) which I replaced with an Omron V-15G1-1C25-K ( 200gm , short hinge ) . perfect fit/feel
an EXACT replacement would actually be a V-15G1-6C25-k , but nobody keeps it in stock.... so you can just break off contact #2 and bend #1 outwards a bit