Can´t get the Marians before 172 BC? I got them somehwere around 220 BC.
Also, what´s up with people not reading the March if Time thing, it´s not like it´s very long. Just read the damn thing when it pops up and you´ll see that it´s a sort of mini-reform that affects mostly eastern factions. The Persians gets some badass Cataphracts as well as their later Bodyguards, I think the same might happen to Baktria, Hay and maybe some of those factions. The KH get´s Greek Pikemen and the Maks get´s Reformed Heavy Phalanx. Possibly some other changes as well.
The reform occurs when a city with the hidden attribute Italy (not Roma itself) become a Huge City.
Hold on a minute, are you saying that by 176 BC none of your Italian cities (apart from maybe Roma) were a Huge one? I´ve seen that AI get them to Huge by then.