Acetone would likely make more obvious. The point would be for structural integrity. In the past when I needed to fix a situation like yours I would add a detail like a stripe that would camouflage the original offence. (such as score a line across the whole bottom 1/8" wide). Off course the normal MO with a radical operation like that is buy the replacement lens from a return friendly place before you start in case that plan goes to hell.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)