Raymond,
No fix was found. I tried playing around the project deleting clips with effects, deleting transitions, moving clips around and still some clips main audio goes out of sync with main video. This is VERY frustrating/annoying as it completely ruins the pleasure of watching the final movie.
By the way, it started from the moment I ticked "Allow SVRT" (I think) but I could be wrong. I will need to continue playing around to find out what exactly causes it. If you look at SVRT info in the attached photo above, you will see that apart from clip-transition-clip breakages on the SVRT track, there are some additional sections. I suspect those additional segments might be the reason for the delays. But what causes them to appear that way? I will have to try to delete clips from the timeline which have multiple segments on SVRT track and re-import them back to see if that fixed SVRT track.
Do I make sense?
Read not to contradict and confute, nor to believe and take for granted... but to weigh and consider.