If I'm not wrong, you are suggesting that the members of the Warren Commission, Earl Warren, Gerald Ford, Allen Dulles among others, people with an impeccable reputation are part of a huge conspiracy kill the 35th president of the United States or at least to conceal the truth of who is behind the assassination. They have agreed to take part in that monumental plot... but they have left telltale signs of the truth in some of the documents! Later some black hand has cross out all those telltail signs while thinking "OMG. This guys from the commission are not very clever". If you think about it, that doesn't make much sense. Sure there must be another explanation to all those crossings-out very far from concealing the truth about the assassination.