If they have leg mites the scales will be lifting up- I believe the cure isindeed to dip the legs into surgical spirit and then coat with vaseline- probably best to treat all of them if they are infested at all. I got mine a week and a half ago; I spent several hours of each of the next few days sitting by the coop watching them! Even ate my meals by them (they went MAD for the smell of mussels!)
I think it's good to get them really used to you anyway. I found that when I started picking them up despite their protests, they quickly became more relaxed about it, and were soon happy to eat out of one hand while I held them on the other.
Hope the mites clear up soon!