Without a doubt the interleaving will be affecting some lines causing the lower syncs.. but it would indeed seem to be there is more to this... and there could well be problems on during the line training stage.
I need to do a bit more digging myself before I can comment any further, but I would imagine that if there is anything out there then our suspected mutual contact will have already had his mitts on it and know about it.
>>> I didnt know Kitz was a lady... oops
lol.. dont worry about it.. Im well used to it...
<<<<<<<< ----- see the reference to the Matrix under my AV