NEWTOWN SQUARE, Pa. — The temperature barely rose above 60 degrees, with a brisk breeze and early-morning chill making it feel worse. That certainly led to some difficult scoring conditions during the second round of the PGA Championship. And so did the greens. Specifically, where the holes were located on them. It’s not unusual to have some precarious pin positions in professional golf, especially at the major championships. But Scottie Scheffler said he’d never seen them tougher. “This is the hardest set of pin locations that I’ve seen since I've been on Tour, and that includes U.S. Opens, that includes Oakmont,” Scheffler said after shooting 71, 1 over par, to stay in touch with the leaders. He was two back of clubhouse leader Alex Smalley. “I did ask, I asked Fooch [Mark Fulcher], who caddies for Justin Rose. He’s been around a long time, and I asked Teddy [Scott, Scheffler’s caddie] too—have you seen anything like this before?…