Tire Valve problems of the 2003 GMC Yukon

I own a 2003 Yukon xl. Purchased 4 michelin tires from ntb in April 2007, $700. 00. New tires have 18,000 miles on them. Jan 2009 valve stem failed and was replaced by ntb, no damage to tire. May 2009, second tire went flat doing 70 miles an hour with my kids driving on the highway home from college. Tire went flat, immediately pulled off to the side of the road. Tire was damaged and had to be replaced, $225. 00. Cause of damage was valve stem, tr 413. One week later, third tire went flat going back to college. Immediately pulled off of highway. Michelin tire also ruined, crushed side wall, another $225. 00. Went back to ntb and complained. At my request inspected 4th tire and it had a bad stem and was leaking. All stems were the tr-413 and not a high pressure stem. This stem is for up to 40 psi. Recommended tire pressure is 35 psi, but at high speeds and in hot texas, pressure for sure rises above the minimum 40 psi. Original spare has high pressure valve stem. Luckily no one was injured. Now I found out that these stems are on recall and defective. Ntb was not aware of anything and they are the experts. Help me!!.