Has anyone had any problems with the Truma Regulators that are fitted standard to 2004 on caravans.I had 1 fail ,so has a couple of friends , but im not allowed to change it myself i have to be a Corgi registered fitter so had to make a trip to the dealer to get it changed , a 10 mins job but 2 hrs of my time , the dealer said they have a problem with them , they are £45 to buy so hope they are covered are 1 year!