hi how are you? i have the same problem with mine at 80. have to push through 80 as quick as i can for it to settle. i asked the mechanic what it would be when i first got it thinking maybe it was the wheel bearings but he reckons if it has done a lot of 4wd the front suspension tends to wear and that could be the problem. i work away and havent got around to getting the new suspension in but when i do i will see how it goes