Continued:

Raising the Panel Ends  When raising panels, make the end cuts first.  Any tearout will be cleaned up when the profile is run on the sides. 

Preventing Rotation Note that there is a rather large opening in the fence.  The cutter has a tendency to drag the corner of the panel into this void when the cut is started.  To prevent the tendency of the stock to rotate into this void, I clamp a large block on the sliding table and trap the panel board between the block and the miter fence. Additional restraint of the stock is provided by the large clamp attached to the miter fence pivot post.

Although the shaper is capable of raising the panel in a single pass, I find that a better finish can be achieved if two passes are used.  Rough out the bulk of the stock on the first pass, leaving about 1/16" for a final finishing pass.

Check the thickness of the tenons on the edges and the end of the panels.  Red oak has a tendency to compress when cutting across the end grain, and sometimes an extra pass may be needed to bring the end grain tenons to the same thickness as those on the sides.

Any questions or comments contact me.