Thanks for your reply. They took the vehicle for a short road test until engine hot although I did tell them that it only happens after at least 4 hrs driving and doing stop/start continually during that time. They said they "looked underneath". I will need to check with garage if they saw to any of these items.
How many times can I get back with questions to yourself
Have relaid your opinion to the garage who say because it is a manual, it doesn't apply. They say to use the proper revs when in first gear and if still a problem after a fortnight to get back in touch with them.
Not having the knowledge of the workings of my car I had nothing to come back to say to them. Hoping you do