Gary , email me and i'll send you a step by step picture restoration of the upper part showing all the parts and how to remove the site glasses. if the site glass manifold bar hanger is broken, i will show you how to make it out of Oak wood.

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Dwaine. pca-west.org
http://www.caltel.com/~jlgas/
http://www.caltel.com/~jlgas/Items_for_Sale_.html
http://www.caltel.com/~jlgas/misc_.html