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| Rob refurbishing a vac release valve ..... |
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| ..... then testing it |
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| Brian drilling out the last few rivets from Horden's smokebox ring ..... |
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| ..... punching them out with Ian ..... |
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| ..... who then hammers off the ring |
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| Heating the nuts on Horden's longitudinal stays ..... |
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| ..... which Steve removes |
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| Test fitting a truss for ET station |
