The Mystic, with a strong-ish drilling, should fit over the Pain...but my one worry is that, due to the OOB surface, that the Mystic will get further down the lane than the Pain. In my experience, the Pain rolls pretty early, whereas the Mystic makes a pretty strong (but controlled) move at the backend. Again, the total hook of the Mystic should still be more than the Pain...just be careful with the drillings and surface preps to make sure that what you want is what you get.
Hope this helps.
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