I just realized this past weekend it doesn't take much to elicit a wobble that will make your life flash before you. My front end, so I thought, couldn't be more solid, with new rancho shocks, all new joints, poly bushings, stiff springs, only 1 inch of lift, and light weight wheels with stock size tires. No stabilizer, however, which really shouldn't be needed on a healthy front end. I hit a fairly minor bump and I thought the wheels were coming off, and it continued to get worse until I stopped. Replaced the warped brake rotors, and it has never felt more solid. Point is, something trivial is probably out of balance, like your wheels or rotors, or maybe you have a majorly bad joint (ball, tie rod, pitman arm, etc.) The first and easiest step is to rotate your tires straight back and front, and while it is jacked up, try to move the fronts for slop. You'll notice if there is front end slop, just pull and try to turn them and shake them.