Hate to say it but I think your outcome will be repeated over and over! Ford turned down warranty work on my friends F-150 that he bought off the lot with a 4 inch lift. He was told warranty would be honored if he had work done by 4 Wheel Parts. He was out 2500 dollars for his repairs...
My friend bought a New F-150 already lifted with a 4 inch lift... bought an extended warranty for over two grand and then inquired about a 6 inch lift and his dealer said if 4 Wheel Parts installs 6 inch lift the warranty is still good! 4 months later and 52000 miles, the spider gears in rear...
I own a 2004 Jeep and have had the “death wobble” off and on since 2005! I never drive over 55 beause if I hit a bump it might cause the violent SHAKES! My wife will not drive it! Can’t wait for my Badlands and it’s IFS!