Escuan, 44 is a word for to move easily (especially at midnight) plus "ch". It's more usually associated with a side of ham. 8dn is an abbreviation of the name of a follower of an evangelical preacher plus "i" for independence and means "African sword or knife" as Orson said.
For the bottom unclued entry, have a look at the "other site" where you will find a couple of suggestions (if it's still there, as they don't usually like them) : the second one is correct.
I'm still struggling with the others you mention and would also appreciate a hint for 18ac and 2dn.