Discovered my spokes were all pretty loose after a day of riding. Tightened them up not knowing what I was doing (I didn't skip any as I tightened them, I tightened them all in a row). I got some tires put on by a shop yesterday because I had no time to do them myself. I asked if they true the wheel when they swap tires and was told "only if they notice the wheel was untrue". I was looking at my spokes when I got home and they appear to all be very faintly curved. Is this normal? I can hardly tell the faint curve is there, but I think it is. Also out of the several I checked, they all seemed to be touching another spoke near the hub side. Is that normal too?