"+ Clarification of "how much ML:Manipulation plays into the VibChant/1002 formula", as researched on GSWiki.
http://forums.play.net/forums/GemStone%20IV/Bards/Bard%20Magic,%20Spells,%20and%20Spellsongs/view/475 " -- Me, compilation post #546

.

So, in addition to a "bump" of this info request...

...are the crits generated by successful VibChant solely based on margin-of-failure? (With associated pushdown for the EER/effective end-roll, as inquired above.)
* If yes, how is crit rank determined?
(If HP damage were being generated, it would be by divisor of the armor, but there is no HP damage except from the crit. Is it just margin/divisor? Margin/<some fixed value, like "5">?)
* Presumably, random location?
* Also presumably, crit randomization after crit rank has been determined? (So, "9" == "range of 5-9"?)