I am not sure if you can or not. it may be a trial and error process. nice looking bike though, if it was mine I would have just put some stell or alloy spacers in to make it rigid until I could find some whatever to fit.
is that Deore LX? looks '94ish
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk