Retrieve list of custom fields in job search.

@operator

I have been trying to retrieve a list of jobs with certain custom fields without much luck. Although below code runs without any errors the custom field list is empty in the response object.
If I run just a basic search without naming individual fields, all are returned including all custom fields.
Do I have to run this as 2 searches first basic than custom?
Any help greatly appreciated.

              _netSuite = new NetSuiteService();              var jsa = new JobSearchAdvanced();              var jsb = new JobSearchBasic();                  var searchStatus = new SearchMultiSelectField()              {                  operatorSpecified = true,                  @operator = SearchMultiSelectFieldOperator.anyOf,                  searchValue = _settings.SelectedStatuses.Split(',').Select(s => new RecordRef() { internalId = s }).ToArray(),              };                jsb.status = searchStatus;                if (!_settings.IncludeInactiveProjects)              {                  jsb.isInactive = new SearchBooleanField()                  {                      searchValue = _settings.IncludeInactiveProjects,                      searchValueSpecified = true                  };              }                var searchRow = new JobSearchRow();              var searchRowBasic = new JobSearchRowBasic();                searchRow.basic = searchRowBasic;              jsa.columns = searchRow;                jsa.criteria = new JobSearch(){basic = jsb} ;                     searchRowBasic.companyName = new SearchColumnStringField[1] { new SearchColumnStringField() { } };              searchRowBasic.internalId = new SearchColumnSelectField[1] { new SearchColumnSelectField() { } };              searchRowBasic.dateCreated = new SearchColumnDateField[1] { new SearchColumnDateField() { } };              searchRowBasic.entityStatus = new SearchColumnSelectField[1] { new SearchColumnSelectField() { } };                searchRowBasic.customFieldList = new