Dear Giorgio,
Both WRC 107 and 297 does not address re-pad. In both cases we (and many other software vendors) add the consideration of the re-pad by modifying/extending the applicability of these bulletins. So, that the user has some answers in case they have a re-pad.
So, as a user you should be aware of assumptions that the software makes. You have a good point. That is why I recommend that users run both WRC 107 and 297 analysis. If it is critical application and if the actual stress is close to allowable stress and if your geometry is lot outside the range of these bulletins, you should look at finite element analysis.
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Best Regards,
Mandeep Singh
CADWorx & Analysis Solutions
Hexagon PPM