I have two broody barnevelders that have been sitting for 4 weeks.  Nothing came of the eggs under them.  Now, I have three choices.  
1)  I could break them of their broodiness, which seems unfair, since they have been so dutiful for so long.  
2)  I could graft chicks under them, since I have 1-week-old chicks that I hatched in the bator last week.  (I have been afraid to do this because it's the girls first time being broody, and I didn't know if they would take grafted chicks.  Now that I suspect a couple of roos, I could put those out and be less worried.) 
3)  The third choice would be to put some new fertile eggs under them, and let them try again.  I just got some pure Barnevelder eggs, which I plan to start in the bator tonight.  I'm not sure I want to chance that because the girls didn't do so well with the first eggs, and even more important, it will be very hard on them to be broody for 3 more weeks.
I'm leaning in the direction of the second option.
What do you all think?