Has anyone experienced an issue where the radar scopes are mixing up the sqawk codes or displaying incorrect/false rate of climb? Here, the Timmins/Moose sector lately, when pilots sqawk ident, say 3711, the one one's get shuffled to 1137 or 1173. And, some pilots who are only climbing at 1000 feet per minute, the radars are indicating 2700 ft / min.