Good points I am not sure if it is the same as on the standard Rocket tank but if so the difference assumption is right
two lines but at different levels in the ring of the tank Yellow below runs to the rear port on the tank and then down to the rollover valve. it is higher off the tank then the moisture drain in green which is flared to collect all the stuff you do not want in your tank. Yours probably has a clog in her light air as described above.
since they are in line with each other when I take mine off I taped them together which holds them at the right stagger easy to put right back on the proper port that way. For me at least!