In the butchered-for-syndication version (Cozi TV) Tyne Daly's role is completely edited out, even though she's among the first billed.
There's a scene cut from the syndicated version that appears early in the episode and is set at the costume shop when Sally and Mac meet their friends to try on various costumes for the masquerade party. This is the only scene in which Tyne Daly appears, so, even though her name is listed as a guest star in the opening credits, she's not seen in the syndicated version.
When Alex says "I'm Louis the Second, I try harder", he is referring to a famous Avis advertising slogan of the 1960's and 70's - "We're number two - we try harder."