Yea, at those rates, it only take one or 2 days over 80 to hear the bacon sizzlin. Something else is the "feed grade" Urea. Is it melting properly? Do you have good tank agitation? Does the tank mix become more concenmtrated as the day goes on because of improper mixing if the active ingredients? Many variables but the first thing I'd do is drop the rate/1000 of N.
"The Poor Fish" circa 1930's: The Poor Fish wouldn't have been caught if he'd known enough to keep his fool mouth shut.