yes get them checked by a mechanic you trust
but donot say to him straight away that foundations are broken
let him take the car for a drive with you and then let him diagnose the problem
lets see what he says
and regarding the foundations Im doubtfull that you will be able to find the genuine ones
I recently got a couple of my foundations replaced and there was a hell lotta difference in the quality of the genuine ones and the new ones which I bought