I'm worried that you may just have a thermodynamic deadlock on your hands, Jeff. If the rotors simply don't have the surface area to shed heat energy fast enough, additional ducting may not make much of a difference.

The fact that the seals seem to actually be melting is not evidence that the fluid is pooping out on you.

If you do add more ducting, point it at the caliper.

How about some NASA thinking here, maximizing lots of little advantages to see if they measure up to a measurable benefit.

** Bead blast your calipers to rough them up - marginally increasing surface area - then apply a heat-shedding coating?

** Add a thermal barrier between the pad and piston?

** Thinking outside of the box again, how about brake pads with heat sinks built into the backing plates?

How do the rears hold up? Are you using all of the rear brake that you have available, as lame as they may be?

K