I came across an anomalie within the 610B document yesterday and need to
resolve it.  The criteria for the side joint length for a gull wing is what
is being questioned.

The spec states that the minimum side joint length is equal to "the heel
fillet" plus "the width of the lead".

My interpretation of this is as follows:

The assumption is that "the heel fillet" reference means the side view
length of the heel fillet as this length is never discussed in the section.
 It starts where the filletfeathers out to the pad and ends at the point
where the fillet joins the vertical section of the lead.

Now for the "the width of the lead":

A gull wing lead has a given lead width. I have two sizes of leads that
need to be addressed, the first where the lead to pad interface is
rectangular and the second where the interface is square shaped.

I'll further define this interface:
Rectangular: has a side length equal to twice the width
Square:  has a side length equal to the width

For the rectangular:  the minimum side joint length starts at the beginning
of  the heel fillet and ends halfway down the side of the side of the lead
(which equals the length of the lead width)

For the square:  the minimum side joint length starts at the beginning of
the heel fillet and ends at the toe of the lead.

All comments are welcome and appreciated.

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