I'm gonna take my truck in tomorrow to see if they can fix one of my tires that loses about 20psi after about two days. There are no nails or anything that I know of in the tire. Can they find a leak this small? I know they put tires in soapy water and look for bubbles but I don't think they will find any with a leak this small. These tires still have 40 percent tread life so I don't want to have to buy a new one.