Hi Everyone! I have a 1966 Vespa Sprint 150 cc. When I apply the front brake the front wheel pulsates. The shop replaced the hub but still pulsating. They greased the bearings and tightened the steering knuckle. Still pulsating! Any suggestions that I can mention to the shop? They're baffled. Thanks, Colin Young Waltham, Ma. (7 miles west of Boston) How do you post a picture?