Porsche 997 and 987 front coolant hoses. What goes wrong?

A video showing how we changed the coolant pipes including the metal crossover pipes on a Porsche 997 model 911 recently. The job will essentially be the same for a 981 model Porsche Boxster or Cayman. 911virgin are based just outside Uxbridge in the UK and have been buying and selling Porsches for over 25 years