The wheel on the lower end of the bracket (that fits into the track)is broken. The name on the back of the bracket is COX ,under this is the number21-77 and under this the numbers 21-767. The system ;track and sliding doors are part of a fitted bedroom wardrobe, installed about 26 years ago.I would be really grateful if you help me to find a replacement bracket
Thanking you
Jonathan
PS I live in England