Check the simple stuff 1st and as has already been posted, Tyre pressures. What works off road may cause huge instability on road.
K60s on my S10 need over 30psi front if they arent to get wobbly at the national speed limit. Stick them at oem pressures and ride it to see what effect they have.

__________________
ex XT660X Tenere, now XT1200Z Super Tenere