I changed my download source back to my original source (which was my father as previously stated) because my other source was too slow. It wasn't until yesterday when I saw Part III because of how slow he was.

My father, on the other hand, had Part IV to me within eight hours of my requesting it, and I really enjoyed it. I have found this entire series so far to be very enjoyable. It's been entertaining and informative, but this last part was excellent. I hope they're able to follow it. I hope they can stay just as good, if not get better.