You’re in good hand with Discount Tire, although your invoice does say no exchange or return since your tires were special ordered. You can discuss the issue with your Discount Tire Store and see what they can do to resolve your concern. You can at least try to direct the issue towards “defect” and ask for warranty exchange from Michelin. IMO your issue is weird from the Michelin PS tires, and I believe a normal Michelin PS AS4 tires shouldn’t be handling seemly even worse than factory Toyo A36’s!
My Discount Tire Store had replaced a new set of Continental’s 2 times and gave me a 3rd set of different Michelin Pilot Sport I’d used before on my 2000 BMW 528i all because some highway road noise issue I wasn’t happy about it. That made me a life-time Discount Tire customer.