I would add, while cleaning up the head, thoroughly clean all of the oil/soot mess from the inside of the intake manifold and crossover pipe. Then, to test this and see if it helps keep the insides cleaner, temporarily disable the EGR valve by replacing the existing gasket with a solid one, for, say, 100,000 miles (you want to do a thorough test). No codes will be thrown because the '95 is pre-OBD.

Jeremy

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970