The front nose former is 1.5 degrees down - put a level on the nose pointing up/down and set the front of the nose level by moving the tail up/down. Set your wings to 0 degrees in this position. This is the thrust line location for level. I would start there and then adjust the wings as needed. Bear in mind that one wing needs to be about .5 degree more in incidence than the other one. If you set both to 0 and fly it you will have a fairly good roll to one side. Adjusting the incidence on the right wing will fix this.