Robbie was quick to mention the spring bushings as well, and I have never had mine out. The lift came on the truck when I bought it, and I hate it, so I had planned on swapping to something else. Coilovers would be my choice (ala TLC Icon style) but I have mixed feelings about continuing to modify my 40. Meh, it's parked now for a while, so I have time to pull it all down and find the issues.
1978 13BT-40, 70 series mechanicals
1966 FJ45 lwb stock
2003 100 stock
1974V8J40, 1992FJ80, 1985FJ60, 1971FJ55, 1978FJ40, 1974FJ40, 1997 LX450 all long gone.