Your'e welcome. It's the same way for me.
Maybe they can remove the six levels limit on comments at some point. It's really messing up my conversations and makes me a lot less inclined to engage, just because I don't know how much I will be able to communicate successfully before me and whomever I'm talking to are cut off. :-/
Maybe there can be a more flexible comment structure. At least it goes straight to a new comment. On Tsu you might have hundreds of comments on a post, but it was hard to see what was new. Of course the order changes here as they are votes up, so that can be confusing too.
I've seen people handle it by just going back up a level or two in the same comment thread and continuing the discussion that way. I've done it myself a few times. It's not too hard to follow. Sometimes we just have a lot to talk about, lol. : )
I do that myself, but it's confusing both for the two people talking and especially for whoever else ends up reading it afterwards.