The two bottom bolts that attaches the portal towards the tractor (housing of the drum brake assembly?) are loose. The other bolts are tight and they go all the way through with the nut visible on the other side. But the loose bolts don't go through and I wonder if it is a nut or threads on the inside of the portal? And if there is a nut that has come off, is it possible to get it back on without taking of the whole portal? It's cold and snowy outside and I don't have a garage