A very traumatic experience. Various emails asking for the same information and photographs over and over again. Also asked to address what seemed highly technical questions which were difficult to understand. It felt like we were just being strung along as the company was too busy. Just wish they would have said it will take 3 months rather than wasting our time. I would have been willing to wait. The engineer himself was good when he came. Had to email and telephone. Responses varied from quick, to NOT at all at times. However it all seems to be working well now which is the most important