"Oswald Never would have been convicted at Trial for 2 reasons.
"#1. He was innocent.
"#2. The authorities "Tampered" with the evidence repeatedly."

(Why the quotation marks around the word tampered? Whom are you
quoting?)

Let's look at another of your claims:

 "3   Altering Walker back yard photo. (3 times)  see walker page
 CASE DISMISSED"

One of the photographs Oswald took in March 1963 of General Walker's home
and the vicinity has a jagged hole in it, obscuring much of the back end
of a car parked behind Walker's home, including the license plate.

Conspiracy theorists say that this hole appeared only after the photograph
was in the custody of the Dallas Police Dept. and the FBI. As proof, they
point to a DPD photograph of Oswald's possessions found in Ruth Paine's
garage on Nov. 23, 1963. Among the items is the Walker photograph, which
appears to be intact in low resolution reproductions of the DPD photo in
books by Anthony Summers and DPD Chief Jesse Curry.

However, when the DPD photo is seen in a higher resolution reproduction,
it becomes clear that the same jagged hole is there in the Walker photo.
The only difference is that in the DPD photo, the hole in the Walker photo
is resting over a white piece of paper with text or other printing on it,
while in the Warren Commission reproduction of the Walker photo (CE 1351),
the hole is resting over a black background.

Two of the six DPD detectives who found the Walker photos in Ruth Paine's
garage clearly remembered that the photo had a hole in it when they found
it. Marina Oswald did not recall seeing a hole in the Walker photo when
Lee Oswald showed the photo to her circa April 1963, but that was months
before the photo was found, during which time Lee himself may have torn
the photo to obscure the identity of the house, should anyone find the
photo.

In any case, there is no evidence that the DPD or the FBI tampered with
the photo in any way.

More here:
http://mcadams.posc.mu.edu/plate.htm