I think 100 is a little high, but that is what "ME THINKS" grin
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They can be rebuilt without too much problem if you are able to look at things and figure out how they work.Read up on it and familiarize yourself with the components.I would ship on to you, but they are pretty heavy.I have a few for parts or possible rebuilds.

There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!