My brother and I recieved our new eko 60's .So far i'm very happy .Working on getting them hooked up.I wish the maneuels that came with them were a little more detailed.Maybe some one can tutor me on the features. 1.how do the adjustments work on the secondary air? 2.New controlers most usable features. 3. coil pipe that sticks out on both sides. 4.fitting under plastic cover on top of unit I sort of know about these items but don't really truley understand them like I would like too.