I see nothing nefarious in BRW saying he went to the fifth floor and was with Norman and Jarman there.
At 3:30 pm on Friday he probably didn't understand the significance of being precise regarding his movements and whereabouts...Thus he simply said he went to the fifth floor ( neglecting to mention the sixth floor) and that's where he was at the time the President was murdered and he was with Norman and Jarman who could corroborate his alibi.....
I know you dont believe that shots were fired from the 6th floor that day. And in a sense the is no need to believe that he heard anything above. There is nothing presented that defies your belief system if you wish. He did know that the 6th floor was the "place of interest", as that was the criteria used for taking him (and Arce, Lovelady, Dougherty, Shelley) and noticing that Givens wasn?t there. This is clear from his statement. At the time it was provided three things were of interest. The 6th floor after the elevator race, Oswald and Givens. This is crystal clear in his affidavit to the DPD. He specifically indicated he went up with the others. He did not. He knew he had been in the SN about 5 minutes before the shots. You believe that don?t you?