quackhead

hey guys new here. i have a 2019 defender hd8. i have developed a vibration in the front end when slowing down to come to a stop. it does it without my foot on the brakes. it happens around 10mph and continues till i come to a stop. it does not do it while accelerating. i have lifted it up, had all four off the ground and cannot find what is causing it. i have around 1200 miles on it. mostly all road miles. not much off road. it has not been used for playing just around the farm for working, and driving around town. any ideas. i don't want to take it to the shop. i like to try to fix problems myself. any ideas or info would be greatly appriciated