I used one of these ovens in Catalonia, Spain a few years back and it was great. Been planning to build one in my garden for a while now and would like to get hold of the plans. How can I purchase them? Everyone I have asked sends me to this page which then directs me to the 'mega bundle' with dvd's etc.. and also says I can purchase individual plans but I don't see a link to get the plans for the double chamber oven. Can anyone help or point me in the right direction? Thanks - Mike