The default is 3 and the softest is 1. The way I ride casually, it won't won't make a difference ... and checking the tire pressure from the way the seller gave it to me ate up anything I got from that. 19 psi ... :facepalm:I suggest being careful using the preload adjustment to aid you in being able to flat foot, that's really not what it's for. There's quite a difference in handling between the lowest and highest settings.
(And front/rear stands.)Things have been ordered: 2" lowering link from eBay, Soupy's adjustable kickstand, 17/43 sprockets + Speedohealer, Corbin seat, Puig w/s.