BTW I tried simulating this on my Garmin nüvi and it chose to cut across 41st, and I am using OSM (openmapchest) data on it.  This is the data before my relation change, but I doubt the relation change would affect its decisionmaking.  This will require a bit more understanding about how Garmin chooses what roads to take and is a little above my paygrade... then again everything is above a volunteer's paygrade :)