The EDF Hawk I'm getting close to finishing has the worst wood positioning I have seen, I've emailed the boss about it and hopefully it will get fixed for future kits and the Hawk I have just ordered.
The wood has always seemed off set, the openings are not equal around the CL. But normally a small notch (like on my original) is enough, this one is by far the worst of the four Hawk's I have done. Set the unit position with the inner gear doors fitted and wheels/legs in place.

Yes, I just tap the plywood (on all my CARF models) No spike nut. I use a new sharp M4 tap in a 9.6 or 12v drill. Drill 3.2mm and tap straight through. Hand taping is not a option as you wave the tape around too much and work the hole larger. I don't add thin CA as I have never found it necessary. I can crank the screw down tight on just the plywood.
My thoughts have always been if you rip the thread/screw out you can still fit a spike T nut. If they are in to start it takes the whole wing out!