What about Shias

Yesterday night I had very hot talk with one friend of mine about shias, he insisting that shias are no so longer Muslim. I told him that we should not declare the Shias as disbeliever because they are believe on oneness of Allah's, they believe on all of Prophets, they believe on all Books of Allah, they believe on Angels & recursion of last day. They also believe that Mohammad (pbuh) is the last prophet & Holy Qurain is the word of Allah Almighty, So how we can say that these are less or disbeliever.

He was giving the many arguments in favor of his stand but some of his arguments is put me in difficult position to counter. He was saying that shias are believe that Qurain consist on forty parts 10 parts were eaten by goats at the time of Hazart Osman, so it means they are not believing the present Qurain is complete which is consisting 30 parts. So in this way they are ignoring the Allah promise that I am the one who is revealing this & I will be a guardian of this. This friend was telling me that they also amend the Kalama (Taueed).

What is the my point here if Shias are the so big contradictions then why not Muslim Scholars unanimously decide about them as they did about Ahamdias.

May some one clarify truth. I expect the litteral input from all of you.

Shia people on the other hand are an extremely united community.

They also have the complete respect for the people in authority. See the ayatollah regimes, these were based mainly on faith the people had in the ayatollah, unlike some regimes in the sunni world like saddam hussien that were based on fear and intimidation.