Unfortunately, the volunteer editor list only shows only about the first 1000 editors, so those beyond the middle of the alphabet don't show up.
Second, I don't think the volunteer editor list has been purged recently, and many of them have left LIT, so they probably won't respond to your request.
Third, while many volunteer editors attempt to be helpful, their grammar, spelling, or editing skills may be limited. That is, volunteer editors merely have to sign up to become one--LIT doesn't have any skill requirements.
So when I attempt to find an editor, I search for another author who's posted stories on LIT. If their stories pass my personal test for spelling, grammar, use of the English language, and so on, I'll contact them. Thus far, it has worked out very well for me. Good luck.