I did tic tac toe for 514 and if 6 or 8 finally hit.. I'm guessing the following (also basing it off the fact that certain digits haven't hit for the 2nd and 3rd number of the three)
First number: 6 or 8 haven't hit in a while
Second number: 1, 3, 5, or 8 haven't hit in a while
Third number: 0, 1, 2, or 8 haven't hit in a while
682, 680, 632, or 881
I think 632 is the winner thought because of the sum being consistent with the pattern