Stadium Effect Adjustments

[gillyd]

Not sure I quite understand. For example since sim 7 my HR rating (one example) has gone for 80 to 117. I'd like to make it 80 again, so in order to do that I would need to open mogul with a new file (since ours is locked), edit my stadium and then exit mogul without saving the new game. Load sim 8 and it will be corrected? I'm not sure I follow it.