Any one know the difference in the axles used in the 2015+ RT versus the SRT/SP/HC. I know the SRT family has to be heavier to take the power. I see the RT uses the same axle for right/left for Auto and different right and left for M6. I know that all the SRT except Demon use the same axles but there are different part numbers for left and right. I am more interested in the SRT family and what is the diameter of the axles and the length. I know that one has a thicker diameter than the other, but other than that, is that the only difference?