Update - I took mine to an independent tire shop (Discount Tire in the DFW area). I requested they road force balance all 4 tires. The manager stated it is better to check the tires initially before attempting a full on dismount/remount of the tires and balance (lower costs). So they checked all 4 tires, and guess what? All four were out of balance. This is after Lincoln has supposedly RF Balanced them already. His explanation was bad techs, poor calibrated equipment at Lincoln, or both...
I have pictures of all 4 tires specs, and 3/4 tire RF numbers were below 20. One did come in at 36, but the machine estimated that after a RF balance it would be around 27, so not much of an improvement. However, each rim was out of balance between 0.5 oz of weight to 1.75 oz of weight... so no wonder I still felt vibrations.
Discount rebalanced all 4 tires, put the highest RF number tire in the rear, and I will admit its quite a bit of a noticeable improvement in the ride. City speeds is significantly better, high was better but due to my area the road isn't that great so not a good test road. I'll drive it around more over the next few days to see how it feels. Cost was $22 per tire, so $88 total for the balance. I'm happy I went in to have them checked, and I felt it was worth the cost to ensure correct balancing (under $100).
What concerns me more is how much out of balance they were after Lincoln did its thing... who knows if it was human error, lack of skill, or faulty equipment. Either way, I would recommend to anyone having issues to find a reputable tire shop (Discount Tire is fantastic imo) and have them check yours out. Ask what equipment/machines they have to test and balance with, and see if they are willing to show you the numbers. At this point, I wouldn't trust the dealer to properly balance tires/rims. Take it to a shop that solely focuses on tires and see what they say and can do.