Take,
"Make sure you have the "timecode source" set to "LTC from channel". and have your timecode input assign to channel 4 in the patch-bay, you do NOT want to assign this timecode channel to a file."
OK.. my bad. I think I DID assign it (CH 4) to a file. Oops. Am I screwed? Fortunately I am doing a hard left for the boom and hard rights for SFX direct from board to Cam A. I'm praying that much of the first day (very little in terms of dialog) will be fine. BR is largely playing the part of the digital archivist, but will definitely be called upon in post.
I will click off the file assignment for Channel 4 and do what you mentioned for timecode. We are expecting real crappy weather on Thursday. Heavy rain on a tin roof does not make for a promising shoot.
Stan