@nelly - do a search and you will find an excellent tutorial By-Tor posted about the various GMT movements and how they operate.
The seconds hand should be polished stell and in certain photos it does appear black.
@Spookycord - NO real mod to the CG itself. Regarding the DSN hands. The reason I went with his GMT hand had to do with the movement swap. The 2836 takes a different size GMT hand and DSN has the correct hand for the 2893 (1.. I am awaiting the Cyclops from the latest effort led by Chieftang.
Thanks for the comments.