Hi Bill you said: For me, the first clincher that they are all the same event is the stars falling from heaven in all three accounts. (There are only two accounts since Matt 24 and Mark 13 are the same account) I can't see the stars falling from heaven and the sky rolling up like a scroll happening more than once. (I agree)

First of all the concordance states that the word star is used literally and figuratively.  
It can mean literally the stars in heaven, then it is figuratively used to describe angels.

Rev 6:12-14 describes the stars literally. And I beheld when he had opened the sixth seal, and, lo, there was a great earthquake; and the sun became black as sackcloth of hair, and the moon became as blood; the stars of heaven fell unto the earth, even as a fig tree casteth her untimely figs, when she is shaken of a mighty wind. And the heaven departed as a scroll when it is rolled together; and every mountain and island were moved out of their places.

The scriptures in Matt and Mark are figurative:
Matt 24:29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken (Not a Earthquake!)
Mark 13:25 And the stars of heaven shall fall, and the powers that are in heaven shall be shaken.

The stars of heaven shall fall is:
Rev 12:4 And his tail drew the third part of the stars of heaven, and did cast them to the earth
Rev 12:8 And prevailed not; neither was their place found any more in heaven
Rev 12:9 he was cast out into the earth, and his angels were cast out with him

The powers that are in heaven shall be shaken is
Rev 12:7 And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels
 
God Bless!


Thank you John!!