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				| Placing the F-785B attach angle on the F-785A backrest brace
 If you look at the drawing, you will see that the F-785B attach angle is not placed flush with the bottom of the F-785A backrest brace. There is an 1/8" gap from the "Vertex" of the attach angle. If you are like me, you are wondering at this point "what the hell is a vertex?". Oh well, back to the Internet. Here's the definition: "The point of intersection of lines or the point opposite the base of a figure". Got it? Me neither. Basically it's the outside corner of the angle piece. So I drew a line on the angle piece as a go-by.
 
 
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