Index: trunk/pswarp/src/pswarpOptions.c
===================================================================
--- trunk/pswarp/src/pswarpOptions.c	(revision 35563)
+++ trunk/pswarp/src/pswarpOptions.c	(revision 39981)
@@ -92,4 +92,12 @@
     }
 
+    // See if we should use a more accurate WCS model.
+    int config_additional_orders = psMetadataLookupS32(&status,recipe, "ADDITIONAL_WCS_ORDERS");
+    if (!status) {
+      // We did not find this recipe option.  We are likely updating an old config.
+      config_additional_orders = 0;
+    }
+    
+
     
     // Set recipe values in the recipe (since we've possibly altered some)
@@ -114,4 +122,5 @@
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.XGRID", PS_META_REPLACE, "Xsize of background model", bkgXgrid);
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.YGRID", PS_META_REPLACE, "Ysize of background model", bkgYgrid);
+    psMetadataAddS32(config->arguments, PS_LIST_TAIL, "ADDITIONAL_WCS_ORDERS", PS_META_REPLACE, "Additional orders for bilevel fit.", config_additional_orders);
 
     psTrace("pswarp", 1, "Done with pswarpOptions...\n");