Sorry, if this is obvious or too simplistic, but...
(1) So, loud for 8 hour intervals until I've reached app. 100 hours total usage?
(2) And by even out, you mean??
(3) And, finally referring back to your other post, http://www.head-fi.org/t/575943/grado-gr10-blissful-harmonics-final-review-added/60#post_7927507, "From new they start a bit congested, then get a bit hot until they warm up..." As a newbie, I still am not sure I understand what you mean, though by "they start a bit congested, then get a bit hot until they warm up and top evens out with more texture and res." Hot? Warm? Are these references to bass or treble? Something else? What does it mean to say that they will "open up?" Both you and Grado say it. I am wondering what improvements or differences in sound I will notice in the next 50ish hours.