Anyone had trouble with MT sportsmanSR front tires

My car has a tire shake in the front. 26/6.00/15 MT sportsman SR. When I pulled front wheels I had 1/2oz weight on left front, had 4.5oz stacked on right front. No abnormal tire wear. I took them last night to a friends shop and we checked on a spin balancer, they were way off. when we pulled the weights and started over we could not get them to balance. Took them to another friend at Ford this morning and he put them on there 10 grand machine. They failed the road force test and also would not balance. Tried moving tires on the wheels, no change. He said my tires are junk. I only have 500 miles on the tires, bought them from summit. Matched set, date code 3708. Going to call MT in the morning but wondering if any of you had this problem. New 15 by 5 American racing wheels, wheels checked good. Total runout on the worst wheel was .006

I had a set on my 65.They balanced OK but were total junk.It was all over the road with them.I even redid the alingment twice because I thought I may have screwed it up.Installed a set of 165 80 15 Kumos radials and what a difference,I have 2 sets now one set is Nexens.Even at the strip the MTs felt like I was on ice.Put them on an extra set of rims and put them on my kids 62 300 and they did the same thing.Rocky