Entering then exiting pit lane doesn't add a lap

[Flag Slot Racer]

So, my pit lane is parallel to the SF sensor, so cars pitting lose a lap. My understanding from reading the manual and talking to others on the SF forum is that by selecting the switch on the RCS64 home screen, that RCS64 would add a lap every time I brought up the pit menu. I tried it last night, and no lap was added. I tried completing a refueling and repairing all damage to see if this was maybe what triggered it, nothing. Is this a bug, or am I missing something?

I have no pit sensors and unfortunately can't afford them at this time, so I am hoping to get this working without them.

Thanks,

Heath