Dumb question:I have the TC off my transmission and am looking at the splined shafts. There is an outer one and a smaller one inside the outer one. Which one is referred to as the input shaft? On my trans the spline count is different between the 2 shafts. I know you have to match up the tc pilot or hub to the crank register and the correct spline count to the tc and trans. I just don't know which of the 2 shafts is the input. I suspect the inner small one but need to know for sure. Thanks.