if your trying to make an RE model you cant paint the engine as the 727_100_11_t isn't in the paint kit release try make it as just a another company then the engine will show the paint you just put on it

this goes foe the 200's as well the RE version will do the same

if i get time ill try make up a 727_100_11_T and a 200 version paint file unless some one beats me to it :D