"TrailRat" wrote in message

Before anyone suggests replacing the unit or the door, the unit is
part of a set of units and any replacements would be out of place. A
new unit is impossible because it was built late 70's/ early 80's. It
came from my parents and I rather like the thing!

Many Thanks

A pic wuld be nice,we can all mae assumptions how to repair it but some
types of repair are not fiting for the job.