I don't see Kazcur as a natural road grader, so I can't imagine him excelling at OG, but I think he can play OG well enough.
The thing with Kiper is his inability to understand what a team's concepts and find players that fit that concept. Instead he grades them based on pure talent regardless of how the player would perform in a team's system.
He was fired as a Baltimore scout because he could not mentally understand the types of players that Baltimore needed that would work well in their scheme and find those players.
Another huge weakness of Kiper's is his total lack of understanding of how personalities fit together in a locker room. He grades one dimensionally, based mostly on film and the occasional police reports. Players are not like that, never have and never will.
That's why I am so glad that we have a coach that will interview a player and do thorough background checks on players before he drafts them. Last year, he interviewed Merriweather 3 times prior to the draft.