I have a 2007 Montana SV6 with 98,000 km. Front end was noisy and loose so I took it to the local garage and they replaced both hub assemblies and sway bar links. Noise is gone but I there is a strange wobble in the front end. the vehicle strays all over the road and sometimes it feels as if each wheel has a mind of its own. Mechanic says everything is fine in the front end but I beg to differ. any ideas?