 Howard Koch (qv) was instructed to start the screenplay all over  again, paying particular attention to Ricks background and the  ending, while the Epsteins were struggling with their version.  Writers Casey Robinson (I) (qv) and Lenore J. Coffee (qv) were  asked to critique the two versions and found much merit in both,  though Robinson thought the romantic angle lacking and was  subsequently tasked with ramping this up.