Can't get the over travel screw back in...

I am adjusting the trigger on my Rem 660 and accidently backed the overtravel screw all the way out, and now I can only get it to screw about 1/2 way back in...any suggestions??? Thanks!!!

Thanks for the reply! I dissassembled the trigger assembly and found that the sear spring was blocking the overtravel screw hole causing the stoppage. The spring is buggerd up, but I can get a replacement cheap enough though...lesson learned!