damn da ble forum timed out. (this is brief version)
Try converting the roof to members (first image) then plumb / rotate.
Select each rafter using shift click then right click > Properties to access Details tab. (plumb 1st End)
Select each fascia using shift click then right click > Properties to access Details tab (rotate, try 145 deg)
You can elevate the fascia or select different insert points to affect position.
test and ask if you have questions.
Section shows how - plumb rafters / rotated fascias (and elevated if you wish) appear.
Setting the roof to raked has no affect on rafters, they are controled by this seperate method.
This may also be of helphttp://www.youtube.com/watch?v=5gLuYoTTmZk&feature=plcp
turn sound UP.