“The author does not claim anything is wrong with the prophecy itself, but all was fulfilled. Your analysis is that which is in error.”
He claims the heptads are 7 years. He claims the crucifixion occured in the middle of the 7th heptad and the abomonation which he describes as the destruction of the temple occured in the 7th heptad.
That is a 40 year gap that haunts all of the preterist forcing of Daniel 9 and he recognizes it or he would not have blamed his problem on Daniel.
The difficulties are inconsequential compared the leap of faith required by the futurist gap theory.
As he said, "The alteration of God's measuring line whereof we are speaking has been effected by the strange expedient of inserting many centuries of time (more than nineteen hundred years thus far) between the sixty-ninth and the seventieth week. And the result is that, instead of a definite and "determined" measuring line of 490 years, we have one which already is over 2400 years in length, and is growing longer every day."