Serious formatting errors
 

Hi guys, hope you can help on this one.

When i try to format a large post, its goes haywire. Text will automatically center or left align itself, sizes automatically jump to size two, quote brackets don't show up. Even if it looks perfectly fine in WYSIWYG, when i post it it looks entirely different. Its becoming really annoying as these posts are one of the key things on my site and i dont want to lose people over it.

The owrst part is when its been posted, if a small part of it is wrong and i go in and edit it, it seems to mess up about 10 other things without me going near them. It's really strange, and i cant figure out what it is. I've tried it on a range of skins (by different developers) and it still does it. I never had this problem on 3.0, its only been happening since i upgraded to 3.6

So, any ideas?