Recently purchased a 2021 S Plaid. After reading about inner rear tire wear I decided to check my alignment. It was quite a lot off so I installed the shims for reducing negative rear camber. I installed 1/8 inch thick shims. The 20mm toe hex was difficult to turn. On one side of the car even with the shims installed I still have -2.5* of camber. I decided to install two more 1/8" shims in an attempt to get it closer to the -1.5* camber on the drivers side after it's shims. Now the 20mm adjusting hex won't turn at all even with a cheater wrench on the 223mm end of my open end wrench. Apparently the multiple control rods only allow for minimum adjustment. Even with adjustable upper arms the same problem should still occur. All either is doing is lengthening the upper control arm. It's not the turnbuckle threads. I removed the tie rod and the threads turn by hand. How can I get my rear passenger side adjusted?