Some posters here are again suggesting that the weathering of the KRS is somehow not right, that there's something wrong with the weathering.
Nothing can be further from the truth.
Since KRS was apparently lying buried in the ground face down for many centuries, the inscription on the face of the stone is quite well preserved. Nevertheless, some runes may be possibly missing from lines 2 and 3, as there's a substantial spalling on the stone in this area. Some experts, like Dr. Winchell, when they first looked at the inscription, were quite surprised that the state of preservation was apparently so good, and Winchell recorded his first impressions in his notebook. Winchell came to the conclusion that KRS is authentic. There's no doubt that Dr. Winchell was an active supporter of KRS authenticity, based on the weathering, and on the circumstances of the discovery which he, himself, investigated very carefully.