These two versions are pretty much identical so I'll talk about them together!
I reverted back to V5 and attempted to sort the leg popping and spacing issues, but I wound up getting very confused over the whole thing. Again, still trying to modify those poses to get the leg to stop popping and to slide smoothly. It's still looking okay but somehow I've managed to make the popping more noticeable.
At this stage I was also thinking that the step wasn't quite wide enough. I may just go back and start again from scratch. Sometimes that's much easier than trying to edit what you already have - you don't make the same mistakes that got you into trouble in the first place!