I got tired of breaking the polished hard steel pins and watching others have the same problem. I went to a softer general purpose 8mm steel rod. Bought 3 ft and just cut to size. McMaster has it @ $8.43 for 3 ft. Now, when I screw up, the pin just bends and replaces easily.</p>

</p>

<a href="http://www.mcmaster.com/#standard-metric-steel-rods/=nhq6c4">http://www.mcmaster.com/#standard-me...l-rods/=nhq6c4 (1018 carbon steel).</p>

</p>Edit: correct price.</a></p>