Hi. Not sure if this is a common problem. I have a 2005 Jaguar x type 3.0 sovereign. When travelling between 25-30 mph there is a whining noise coming from underneath the car. At all other speeds it is quiet. 
 
	If it needs a new propshaft is this a job a specialist would be happy to undertake? 
 
	Very best wishes to all. 
 
	John