Now tell us why the top of the bag carried by Oswald would have to be seen poking over the shoulder, rather than angled over (using his left hand) to a position a few inches in front of his face and out of sight from Buell.
HUH?? I can't understand you?.... Would you please explain WHY Lee would want to hide the paper sack from Buell Frazier's view? Frazier had seen the sack when he climbed into the drivers seat of his car, and he saw Lee take the sack out of the car when Lee got out to walk to the TSBD. Since Frazier knew that Lee was carrying a paper sack.....WHY would Lee want to carry it in a manner that you believe was meant to hide it from Frazier's view.
That's a good point. But only if Oswald was indeed carrying said curtain rods, and not a broken-down Carcano. Oswald's behaviour, and the angles available in carrying a 34.8" package in a manner required to fool an onlooker walking behind and at a distance, favours the latter.