S_TABU_DIS and non-classified tables (&NC&)

Does anyone have any insight into providing display access to non-classified tables (&NC&) via authorization object S_TABU_DIS. Our specific issue at this point is via SE16 with display only access. Our testing has shown that tables without any authorzation group assigned required a value of (&NC&) in field DICBERCLS in order to make SE16 work. The challenge is that we have a number of custom tables without any authorization group which means we need to provide &NC&. If we do this the users automatically get access all the non-classified tables.