Re: Rarely and Umpteenth (1) Yes, that's a good place for an adverb, as long as you don't overuse the form.
(2) 'umpteen' is the cardinal number, which is required here, with the plural 'memories'; 'umpteenth' is the ordinal adjective, specifying a single memory in that numerical position.
'He has seventeen girlfriends; his seventeenth girlfriend has jilted him.' |