I am having trouble linking gauge table for files where the structure is like below, which is before 2013.
 

I can link it just fine with API if structure is like below
 

Code used. 

Set swModelExt = swLclModel.Extension
Set swSheetMetalTemplFeature = swModelExt.GetTemplateSheetMetal

Set swSheetMetal = swSheetMetalTemplFeature.GetDefinition
swSheetMetal .SetUseGaugeTable True, "C:\myloadpoint\SolidWorks\k-factor