I've a 2000 323 se 1.8 I have had about 6 months, 78,500 miles, had new clutch last week, now it has started jumping out of 5th when doing around 60 mph, took it back to garage, they said it wasn't because of clutch, it could be gearbox problem (checked linkages, etc) seems a coincidence just started when clutch renewed, any suggestions on problem?