this may be a combination of hardwar/software/lcd screen that may only apply to me but if it helps one other person than that person has been helped:
Going from my A2300 Genlock color composite out to a small LCD with regular RCA cable.
I was getting wanky straight lines- bent with steps, weird coloration, etc.
I found that by switching to interlace and then back to normal mode so I can read it (it is only an 8.1 inch monitor/tv) that it resolves correctly. Looks great in fact. Hope this helps someone