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There is an option for that in the openscad file BoschMount_Rev36.scad
Type = 0; //0 = Old, 1 = 525C
Depending on whether you set Type = 0 or 1 the program will use the Old or 525C profile from the VerticalPipeConnect_Profiles_Rev120.dxf file. This is untested, so you may have to tweak the dxf profile some.

BTW, this design is working really well for me so far.