How do height discrepancies on NCOERs affect selection during the DA centralized board?

I have a fellow SSG who will be receiving their first look for SFC this upcoming board. On their last 3 NCOERs the NCO has different Heights. SM has a height of 71in on his SRB but on his last two NCOERs he has 72in (SSG Eval) & 68in. (SGT Eval). SM has 71in on all previous evaluations. I have already informed the NCO that it is their own responsibility to verify the accurateness of their administrative data on their NCOER and that by them signing they are pretty much telling HQ DA that this information is accurate. SM is in excellent shape and their weight always stays between 155-165, I included the SMs weight because I know from reading the Field AAR's of previous selection boards it states that there were numerous inconsistencies with SM's HT/WT on NCOERS. It went on to say that SM's were getting taller as weight increased progressively through Evaluations, so they were pretty much trying to "game" the system. Which is not the case for this NCO, he was well within the WT standard on every evaluation no matter height, and it is obvious when looking at their DA photo. The NCO in question is just guilty of not paying attention to their records. Just want to get feedback to see if anyone has dealt with a similar situation, and how detrimental is it to the NCOs chances of being selected for promotion for this board and the future.