You can have a total of 140 on your FL. Try to set yours up so that more than half of it are players who are a good few Ages above you as aiding them gives you the chance of BPs for higher age GBs. You also need to work on your FL to keep it current. Some player do stop aiding, either they leave the game or move to a different world, or simply get bored of aiding because they do not understand the benefits. It is a good thing to clear out the dead wood about once a month. It is also good to keep one or 2 places free in case you have to add someone .