My wife and i are driving to Leh via Manali in June, we will be coming from Dehra Dun and staying 2 days in Manali before going ahead. I would like to get my Bolero tuned up and checked before we finally leave Manali. Is there a Mahendra Service Center there in Manali? Are they good? Will I be able to walk in and get it checked or is advance booking required? Any contact info would be really appreciated.