Is it just me or placing Feds on friends towns are getting harder and harder to do?

I was only able to use the Fed button in about 60% of the towns. It really doesn't take much time for the towns to get full. 20 Feds allows for only 7 people to tap before filling up the town. During the day I can't be on to clear my town for many hours. Even at night when I check every hour or two I have at least 12-15 feds each time.