Atego 1 ’04 tooth flanks game rear axle set..

Hi together. I lay the days under the lkw and notice that the rear axle has a quite large tooth flank game. Now the question: The truck has run about 300,000, can you then do something else or leave it better so until it gives up the mind? Because I have the fear that the plate and bevel wheel have entered this game and if I now recreate that then surfaces come into contact that have not yet entered.. Or do I now have a thinking error? Would like to know how you feel about it. Lg Christian