Just because the wall is offset from the peak does not mean that it is not load bearing. Remember that the peak is the joint between the two halves of the building, and something needs to hold it up - in the case of a double-wide, each half of the building needs to move as an independent unit, and so cannot rely on the other half to support the peak. The offset could have come about by the designers wanting to give more floorspace to one room (living room) over another (kitchen).
I would plan on treating it as a load bearing wall, and do a thorough investigation of the floor supports to make sure that the relocated weight is placed evenly on the support joists, not on the flooring material between the joists. This may change the position or width of your opening slightly, but it would help to maintain the structural integrity of the home.
While searching for something else, I came across a site
here that might be helpful to you!
Hope that helps!