l(1)9Ee1 is lethal with all sesB alleles; not clear whether this is because of a stock mixup at some stage or some other reason, but note that Janca et al. recovered only one allele of l(1)9Ee and were unable to separate it from alleles of "l(1)9Ed" (sesB) by deletion mapping (FBrf0044450).
Shows some escapers over Df(1)ras217.