He Terry,
Bad situation , BUT....
I mean a recovery/salvage can be performed.
30 years ago I machined myself thoses wing attaches. Not so difficult.
Here is my suggestion ==> with a conical milling-tool rework manualy the cylindric holes to correct conicity.
Per plans :
Pins taper are 5° (10° included), SIN (10°) = 0.1736
Pins diameter is 1" at maxi (conical),
Total Wing attach tickness is 0.625"
That is to say that diameter difference from top to bottom is
(0.625 * 0.1736) = 0.1085" (= 2.76 mm), very few. 0.0592" on radius !
This diameter increase will not decrease the attach resistance/strenght.
Make new pins, according to larger diameters in plates. Don't worry w 125 000 psi; it's easy to get in mechanical shopflors. My suggestion is to not use tapped pins, all 4 the same, drilled, and use longer bolts w nuts. (so I did)
Have to use "larger" tubing for WA-7 (may be not....).
That all can be performed manualy "in situ" (MUST BE...) They are 4 assemblies: 2 on top and 2 for bottom. Each one will be reworked inependently, but all parts together, that is: (WA-1) + (WA-3) + (WA-1).To facilite job, it's helpfull to remove WA-3 from wings.....
New pins have to be available first, to "lock" first hole as soon as milled to proced to second.... (not mandatoty, but safer...).
Plans are in section I page 6-17.
Conical milling-tool : 10° (included) suggested. Slightly more is possible (I'm 13°) according to avalaibility.... Avoid less, as you can get an "auto-block" cone system !.......
I hope that can help.
Regards,
Gilbert,
VE f-PMPZ @ LFPK.