I'm very new to TANE and I'm messing around in surveyor. Laid out a small route and was working on placing signals at a pair of crossovers and no matter what I do one of the signals is always red over red. No switches are lined against them and there are signals after that farther down the line. I've checked the box to see how they operate without a train and they're always red. I'm using the G Type Signals from Jointed Rail. I have no idea how to fix this any help will be much appreciated.