Thanks guys! Richard, for the take-off you mentioned, the picture described the plug as "cast aluminum". Does that mean it was custom formed? Because I don't think our school has that capability.
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As for balancing the arm, I found an awesome thread on Chief Delphi here:
http://www.chiefdelphi.com/forums/sh...d.php?t=109795
I have some questions about that, but I'll go over to that thread for balancing the arm.