Hi guys -

I have these four edges left unjoined in my model. I've tried 50 different methods of getting rid of them, but I can't quite seem to figure it out:



I obviously need to rebuild this face of the model to get a good join, but can't figure out how to do so cleanly. (I didn't do the initial work, it was an IGS from a client). There's a subtle curvature to the surface, and the lettering only complicates matters. I've tried deleting that entire face, extruding the letters, and rebuilding it using boolean operation, but that doesn't quite cut it. These edges show plain as day in my poly export, unfortunately.

Does anyone have any suggestions?