You should end up with something like this....
A few taps of the dead blow hammer..... you should get something like this....
Time for the real deal....
Since my panel is 11-1/4" and the piece of wenge that I'm joining to it is only 3/4", I needed to make sure the wenge was firmly in place behind the panel, and adjusted in there with the spacer block.
I used a couple of pieces of wood (not necessarily scrap) that was planed earlier to the same thickness as the wenge & sapele panel as both a spacer and a hold down for the 3/4" piece of wenge behind the sapele....
All systems go!