Our team started experiencing problems again. We changed the configuration, per the third post located at
IFI's Forums.
We found that when you make both perpendicular to the floor and away from metal objects they work perfect. But you get a metal object near one of them, or in there line of site they have problems at times. After talking to IFI, they had told us two things to read that post and follow what it said there, and to keep it away form metal objects. Now this seems weird considering most of the field is metal, and the rack in the center is all metal, and other robots are made out of metal. My guess is this year we are going to have problems on the field.