The are a vast number of posts on that thread that are totally invisible to the normal punter. They've been deleted by mods because they are superfluous to the point of the thread. One example would be the juvenile baying and testosterone induced posturing whenever a female ppruner posts her pic.
It may well be that you an never find a way around 30 or 40 per cent of the posts being invisible and potentially messing up any count system.
I'd capture the pic url's and create a new, clean thread over time.
Regards and thanks for all the work,
Rob