NEWTOWN SQUARE, Pa. – Sei Young Kim ignored the manually operated leaderboards dotted around Aronimink as she started to rally her way into contention.“I was in a good momentum, so I just wanted to ride on that,” Kim said.By the time she finished sinking birdie after birdie en route toward matching a record round, Kim could afford a peek at the board: Her name was on top.Kim birdied five of the final six holes as darkness fell Friday at Aronimink for a 5-under 65 and the second-round lead in the KPMG Women’s PGA Championship.The 27-year-old South Korean closed with a 6-under 29 on the front nine.