MILWAUKEE – With one-third of the Miami Heat’s vaunted “Big Three” struggling, the time was right for Ray Allen to have a big night.Allen did just that, scoring 23 off the bench to lead Miami to a 104-91 victory over the Bucks in Game 3 of an Eastern Conference first-round playoff series Thursday at the BMO Harris Bradley Center.The Heat took a 3-0 series lead, and they could sweep the series with a win Sunday in Milwaukee.Allen went 8-for-14 from the field and made five 3-pointers, giving him 322 during the playoffs for his career. He moved past Reggie Miller (320) to break the all-time record for postseason 3-pointers.“It just came out of nowhere,” said Allen, who spent the first 5 1/2 seasons of his career in Milwaukee and led the Bucks to the 2001 Eastern Conference finals. Allen’s production helped make up for a quiet night from Dwyane Wade, who hit just one of 12 shots and finished with four points. Wade still contributed, dishing out 11 assists, grabbing nine rebounds and making five steals in 36 minutes.In all, five Heat players scored in double figures. LeBron James finished with 22 points, six assists and five rebounds. Chris Bosh had 16 points and 14 rebounds, and Udonis Haslem had 12 points. Chris Andersen added 11 points and six rebounds.