I assume that you agree with Russo..... So you probably think that parts of the letter are lies.
Okay, I have read the letter and here are my opinions:
1. You have already brought up the "real name" item. I don't have any further comment about that one.
2. The I and Marina ... are now living in Dallas, TX sentence is possibly something that Gus Russo considers a technical lie (or at least misleading). Since the two were married, Lee's sentence implies that they were living together. They were not, and Marina was technically not living in Dallas but in Irving, TX (yes, I know it is a suburb of Dallas). Personally, I don't consider this to be of much significance and I doubt that Gus Russo does either. But it is typical of LHO's propensity to not tell the truth and I think it is possibly one item that Gus would point out if he were responding to your question.
3. The sentence in which LHO indicates he was secretary of the FPCC in New Orleans is also something that I believe Gus Russo would point to in response to your question. I haven't seen any evidence that suggests that there were any other FPCC members in New Orleans besides LHO. It appears to me that LHO at least exaggerated when he described himself (as secretary) and I believe that most people would probably consider that a lie. Also, I cannot believe that LHO actually knew whether or not the FBI was interested in his FPCC activities or not. So that would also be an item that I believe Gus Russo would point to in response to your question.
4. The sentence regarding the November 1st visit by Hosty to the Paine residence states that Hosty visited
us and warned LHO about participating in FPCC activities in Dallas. Hosty didn't even see LHO on that visit because he wasn't there (so the "visited us" is not accurate, he visited Marina and Ruth but not LHO). And neither Ruth Paine or Marina have said anything about Hosty warning anybody about FPCC activities. So there are two items that I believe Gus would point to in response to your question.
5. The sentence regarding Hosty suggesting Marina could defect from the Soviet Union appears to me to be a lie. I haven't seen any evidence that would support this, what I have seen simply indicates that Hosty assured Marina and Ruth that he was only gathering information. I also haven't seen any evidence that would support LHO's claim that he and his wife strongly protested the alleged tactics by the FBI. The mysterious note LHO allegedly left at the FBI's office might have contained a protest. But was this letter written before the alleged note was delivered? And I haven't seen any evidence that suggests that Marina even knew about the alleged note, so how could she have been a part of a strong protest? These are items that I believe Gus would point to in response to your question.