Partial solution.
In 2d I split the pre-raked morph railing to the stair angle, then rotated lower section 45 degrees, then stretched the outer nodes to to what seemed like a common point, but could not get the 3d joining point to look correct.
I asked, is there an intersect command for two morphs that I'm missing?
Updated: Yes, just found some great Morph commands: Design>Modify Morph>....
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