Carl, there are other problems with the upper grade too. I don't know if you noticed, but the section by Red line was 1.37" high and the original grade started there. It ran just around the half circle and was almost 5%. On the other side of the Red line the elevation is 0" and abruptly went up to the 1.37". The lower grade was also almost 5%, so I added some tracks to both grades (Purple) to get them down to around 3%. They can both be extended further to get them a little lower.
FWIW, I also agree with deleting the turntable, but that's because I don't intend to collect engines and, like Leandro, I don't have room for a "real" yard complete with roundhouse, engine repair facility, lead tracks, etc.
