Hey Rick,
If the tire is cupped you can feel it by running your hand on the tire. It will feel like uneven wear and have a sharp feel when moving your hand over the tire. My wobble in MV was due 100% to my rear tire cupping.
Howie and Jeff have the same Metzler tires as me. I had 42 in front and so did Howie and Jeff. All of our front tires were fine. No signs of cupping. I previously had 42 lbs in my rear tire. Jeff had 45 and Howie had 50. My rear tire was cupping bad. Jeff’s tire was cupping but not as bad as mine and Howie’s tire was not cupping. Howie spent many hours online asking everyone and the consensus was these tires need higher pressure than most other tires.
Before you ride run your hand along the tire and see if the tire wear is even or not. If it starts to cup you will feel ridges as you run your hand along the tire. If that happens then increase the tire pressure to the maximum tire pressure notated on the tire or at least close to the max.
From now on I will always increase the pressure if I feel tire cupping and keep the pressure at or under the max as stated on the tire. I hope it is tire cupping and it gets resolved by tire pressure.
Rich