| http://www.w3.org/ns/prov#value | - de walls so that it spreads the force through out the whole tube, imho overkill since the hooks are only 10,000 lbs......your concern with the hooks not being perfectly horizontal is well founded, you should definitely use a spacer such as a washer or thin flat stock to make the assembly perfectly horizontal, he is where your strength lies, force being exerted on both bolts equally, a misaligned
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