I need some advise in removing the reversing gear so in can put my direct drive reversing gear instead on this new A4 witch it had a V-Drive that i already remove.Has anyone remove the reversing gear with out removing the upper half rear casing? If no. How do you break loose the seals of the upper half casing? It appears that the permatex is very difficult to loosen up. I do not want to hurt or damage the engine or the housing.