Karyn Marshall thought she could set a world record. She thought about it so much it messed up her performance at the U.S.

Mark Lenzi knew he could do better on the 4 1/2 somersault dive from a tuck position, and he did.

Marshall still won the heavyweight division in women's weightlifting Friday with a total of 507 pounds. It was not exactly what she sought. The 220-pound Pelham, N.Y., resident had hoped to lift at least 44 more pounds.

"My problem is I think too much," said Marshall, a financial analyst on Wall Street. "I took big jumps today and I didn't give it my full concentration."

Marshall made her first snatch attempt of 100 kilograms (220.25 pounds) and jumped to 110 kilos on her second attempt but was unsuccessful. The crowd cheered the 33-year-old as she attempted the lift a third time, but failed.

The 1987 world champion also missed her clean-and-jerk opener of 130 kilograms (286.5 pounds), but came back with a good lift on her second attempt. She then tried an American record 140 kilos (308.75 pounds) and even was given a fourth try at it, but couldn't lift the weight.

In the 75-kilo class, Arlys Kovach of Tempe, Ariz., equaled her snatch record of 92.5 kilograms (203.75 pounds) and set the first weightlifting record of the festival when she did 115 kilos (253.5) in the clean-and-jerk. That gave her a record total of 457.25 pounds.

Carol Cady of Stanford, Calif., took the gold in the 82.5-kilo class with 407.75 pounds.

Lenzi became the first American to complete the 4 1/2 somersault tuck dive on Thursday, from the 3-meter springboard. But it was shaky, at best.

On Friday, Lenzi, 21, of Fredericksburg, Va., did much better on the dive in the platform preliminaries. He received scores of 6 1/2, 6 1/2, 6, 6 and 7 of a possible 10.

"I did a good job with the dive considering I didn't get a very good takeoff," said Lenzi, the NCAA 1-meter champion who qualified for Sunday's finals by finishing seventh. "My right arm slipped up my leg in the tuck and I didn't think I was gonna make it. But it's gonna take some time."

While Lenzi was working on his new dive, Scott Donie of Houston won the preliminary round with a 592.35 points.

Thunderstorms delayed all outdoor action as the festival heads into its final weekend. Before the rain hit, Courtney Nelson of Concord, Calif., and a student at Brigham Young University, won the women's platform diving preliminaries with 371.75 points.

Cokey Smith held a comfortable lead after five dives, but Nelson saved her best for last, nailing her final three dives to come back from fourth place.

"This is a good preparatory meet for me for nationals. There's no pressure at all," Nelson said. "You just go out there and do your best."

Smith faded to sixth.

After a pair of early-evening downpours, Olympian Connie Price broke the meet record in the women's shot put with a throw of 59 feet, 101/2 inches. Price, 27, of Hobart, Ind., in the shot put and discus at the 1988 Games. She beat the festival record of 59-63/4 by Bonnie Dasse in 1986.

"I'm pretty glad about the record," Price said. "This is the last meet of the year for me (in the shot put) and I wanted to go out strong."

Price won the discus and finished second in the shot put at The Athletics Congress championships last month. She is favored in Saturday's discus.

The West clinched a spot in the hockey gold medal game with a 7-5 victory over the East. Minnesota's Peter Hankinson scored two goals and had three assists for the West, 2-0-1, which trailed the winless East 5-3 2:59 into the final period. But the West scored the final four goals.