The bevel box is quite a basic bit of kit.
It can only be a matter of incorrect tolerances that are causing the problems.
You would certainly think so, after all the 1909 prototype had one, all since then. Mine is ok (1930) and as far as I know, not one that is generally complained about for two and three speeders. Although truthfully the whole car is pretty noisy.
Assuming, and it is a reasonable assumption these days, the gears are correctly machined, it can only be an alignment issue; most probably the thrust of the pinion gear. I'd expect a small amount of noise due to the gear machining to go away with wear, say the aforementioned 1000 miles, but any due to thrust or alignment errors wont.
