Hi,i own a 55 sportage 2 ltr diesel,havin problems with what i think is gearbox noise? Same noise in any gear 1800-2500rpm,rattling/vibration,also round town 30mph in 4th,put foot down same accurs?been into kia,they replaced exhaust flex 1st,2nd,either release bearing or clutch plate cant remember which? Now this did cure it 4 couple of weeks but comin back.Took it back in as it was somtimes difficult 2 change gear 2nd to 3rd.Can you suggest what i do now? or is it how they are?Brilliant car otherwise!! Cheers, Quent.