Richard and Borzki; many thanks for responding,

I think I may have caused a terrible misunderstanding! I used FEA conversion while using FEA tools. by the first Borzki's response, I foolishly thought he was suggesting a rerun with B31J. that's why I replied that I wasn't sure if this would be of any help on figuring out a slanted connection SIF/flexibility properties.
FEA method has been used in all of my 3 calculations using FEAtools, FEPipe and NozzlePro. in all 3 programmes I have modeled the exact same slanted connection qua material, thickness, geometry, boundary and process conditions otherwise any comparison between the results of those 3 would be nonsensical.
By the way, I don't think the meshing settings in FEAtool and NozzlePro can be changed. if it can, can you please let me know where to access it in those softwares?

many thanks in advance,