Maoism and Two-Line Struggle

As far as I'm aware all the major Maoist parties uphold Mao's view of Two-Line Struggle within the party as a correction of Stalin's view, yeah? But then isn't that at the same time kinda fundamentally at odds with the Cultural Revolution?

Well, I've never heard of the two-line struggle being a correction, but rather an advancement of Stalin's view. As far is I know, the theory is: In every class society, including socialism, there are classes and there is class war. In socialism, the class war will not cease, but rather intensify. That's what Lenin and Stalin taught us. And the Chinese theory of the two-line struggle says that the still existing bourgeois ideology can also infect and pervert parts of the part. So, the party always has to propagate the proletarian ideology, or else the bourgeoisie ideology can thrive and have devastating consequences. Also, the existance of revisionism is a result of the bourgeois ideology.