Plugging errant drag wire holes

[barchiola]

the nice thing about picking up where another builder left off is that you don't have to admit to anything that you can blame on the first builder. in this case, i'm innocent but i still have to fix something i've come across. i have an interference issue with the outer pair of drag wires and, as it ends up, all four holes were drilled on the high side. it's easy enough to drill two holes on the low side but what are suitable substitutes for the maple drag wire blocks if I can't find maple dowels to plug the holes? 3/16" maple dowels are a bit tought to find. does it even have to be a hard wood or would a soft wood like poplar be ok?
thanks in advance,
bart

 

[shetlandnick]

 

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[Jerry]

 

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[macwolf]

 

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