It seems the threesome make great strides to go forward and then go back three steps.  It's frustrating, and you want to take them and give them a good shake and tell them to get over it and move forward!!  I thought the idea of the tracker to be ingenious and how Draco removes it with the instructions of Leif.  I like the gentleness of Leif towards Draco.  Also Leif and Alexei have a lot of patience with Draco and Harry, who are over the place with emotons.  The magic that Draco and Harry possess and the way it interacts with one another is so fascinating. It shows a brotherly love to be with each other.  I know since I have 3 brothers and I do enjoy time with them now since we have our own adult life but when we see each other it reminds me of this magic.