Firing Line receiver ANYONE??

I just bought a matching Russian type III kit with a Firing Line receiver. I was playing with the parts and the bolt won't go far enough forward to rotate. Upon further inspection, I found that the lower rail on the starboard side is too long or the bolt has too much "meat" on it. That is where it is binding. Anyone else have a problem like this? This is my first milled kit and receiver. Any suggestions?

I tried several bolts that I have and none will rotate. Still looking for answers/suggestions.