NEW BOSTON, Mich. - Trainer Gerry Bennett won the finale of the Michigan Sires Stakes at Pinnacle Race Course with Bipolar Express, a horse he had to claim back recently. Bipolar Express was up late by a head to win the Classic over Hot Chili, who dueled inside of Mt. Factor for most of the race. Demagoguery, also a Bennett charge, was a neck back in third in the field of eight older colts and geldings who are progeny of Michigan stallions.\nJockey Terry Houghton traveled from West Virginia to be reunited with Bipolar Express, with whom he won the 3-year-old division of the Sire Stakes last year. The pair went the 1 1/8 mile in 1:54.21. Bipolar Express, who is owned by Winning Stables, Inc, paid $5.20 as the second choice. Favored Meadow Vespers rallied five wide, but finished fifth, beaten about five lengths. \nBipolar Express was claimed at Presque Isle Downs on Aug. 27 after winning for $25,000. Bennett, who recently saddled his 3000th winner, took him back from trainer Scott Lake in his next start, a fourth-place effort at $35,000. His Sires Stakes win was worth approximately $30,000, although the final purses, estimated at $50,000 each, for the series of six races won't be known until the state of Michigan has a final accounting. \n* In other Sires Stakes action, Valley Loot was a repeat winner for owner Felicia Campbell, CEO of Pinnacle, trainer Ronnie Allen, and jockey Freddie Mata. Last year's Michigan horse of the year rallied outside for a 1 1/2-length victory, paying $3. Her time for the 1 1/8 miles was 1:55.99. It was the third of Mata's Sire Stakes wins on the card.\n* Romeo Again won his first stakes in the Michigan Sires Sophomore Colts, winning by 5 1/2 lengths, after covering the 1 1/16 mile in 1:47.31. Mata rode for trainer Allen and owners Felicia Campbell and II B's Thoroughbred. Campbell Stable bred Romeo Again, who is by Secret Romeo. He paid $6.20 as the second choice. \n* Hakuna Matata proved the best 3-year-old filly in her division with a 1 3/4-length win completed in 1:49.95 under jockey Angel Stanley, who won two races in the series. Larry Uelmen, a double winner, trains Hakuna Matata for White Lake Farms, Inc. A Meadow Prayer filly, she paid $4.80 as the favorite.\n* Uelmen and Stanley won the juvenile filly race with Hustle Now ($3), who is now riding a three-race winning streak. The favorite, owned and bred by Sheffield Farms, Inc., drew off by 5 1/2 lengths in a time of 1:13.87 for the six furlongs. \n* Hour by Hour led all the way to take the 2-year-old male race with Mata aboard($15.40). James Jackson trains Hour by Hour for Laura Jackson and breeder Valerie Irvine. It was Hour by Hour's first stakes, win and he completed the six furlongs in 1:13.38.