1996 Geo Tracker EGR tube restriction

I drive a 1996 geo tracker 16 valve 1.6 liter. I live on a small island where the engine never really warms up. The egr tube becomes restricted with a gummy carbony sludge about every 1000 miles. There is very little blow by. Has anyone attempted to insulate the erg tube in an attempt to keep it hot and reduce condensation of exhaust? I seeking a permanent solution.