Dear Mr Williams, please accept our sincere apologies if on this occasion we have not exceeded your expectations.Your satisfaction is important to us and therefore we have ensured we investigated this thorughly. We initally received a pencil drawing from yourself and using all information on this, supplied you with a bespoke design and specification for an underfloor heating system. Upon your request and you supplying us with further information, we then amended this to incorporate a design for underfloor heating within a joisted floor (unfortunatly we were not advised the floor was joisted initially) and then we subsequently amended the drawing a 2 futher times, firstly upon your request to move the manifold location from your originally requested poition, and then amended to revise the rooms dimensions after your re-measuring of the area on site.We believe you now have the design that you are satisified with as you have subsequently ordered the full list of components from us. Howeverif there is anything we can assist with either now or in the future please do not hesitate to contact us. As you can imagine we take pride in ensuring all customers are satisfied with our products and services - as you can see in this case we have ensured we amended the drawing multiple times after each time receiving new and revised information, in an attempt to ensure your ultimate satisfaction. We thankyou unreservedly for your comments and will use these to check whether there is anyway we can improve our customer service from this.