So we polished off Forgotten Age today - I can understand why people have issue with it, especially the difficulty, but I loved it.
We did run into an odd situation setting up for Turn Back Time though. What do you do with other tokens that have been added to the bag? We couldn't find anything that said you remove them, and the "cross everything out" doesn't do so since added tokens aren't recorded in the campaign log. Turn Back Time's reference card doesn't include anything for those tokens though, which seemed really odd.
We ended up leaving them in and treating them as zeros - it was enough of a good/bad that we called it a wash on the Grim Rule and just went with our best read.
Anyone have any clarification on this, or how did you handle it?