1) unfortunately not, you can check how smooth the transitions are if you seek on the bar by clicking. Normally you can't detect small imprecisions. The transitions are internally around 20ms precision, so I thought it wouldn't be the best to snap it until I figured this out with more precision.
2) I checked again, the calculations are correct, are you sure it's 140bpm ?
The sync track has still many building sites that are not as good as I would want, but most things are usable with some gradations.