Not sure I can really add much to the instruction to try ‘forum – integration – page and permalink and update the forum permalink‘ as that pretty much covers it. Did you look at the admin panel and not find the button?
However, if the main forum links are fine then that probably wont help. I say probably because who knows what effect Pilot Press may have… I am unfamiliar with it.
What, I think, you need to look at is what is actually wrong with the urls being generated. And you really nee to check those against the regular and loadable url then we can compare the two and try to work out what might be going on.