Hi guys i am a newbie and am contemplating Buying a Discovery XD from a guy locally it has some issues like the brakes apply when u slow down i believe. I think its a vaccume problem on the brake booster. the other issue is when u start it cold it runs like a champ then after driving you shutr it down and it wont start till it cools off some one told the owner it could be a sticky exhuast valve causing it. other than that from the pics ive seen it looks pretty good still has the waterproof seat covers on it and he is the 2nd owner. he is firm on 3800.00 just some input would be great Thanks.