I think it was LR1, long time ago, when I picked up these setting for input sharpening from Jeff on this forum:
PKS medium edge A=37; R=1.0; D=35; M=40
PKS Narrow edge A=40; R=0.8; D=50; M=0
PKS Super fine A=45; R=0.5; D=80; M=0
PKS Wide edge A=35; R=1.2; D=20; M=70
I have made presets for these settings as a starter
Hope This will help.
I have these as a preset in my LR as well, but couldn't remember where I got them. Kinda wondering if these should be updated with LR3?