Pixel timing problems

[av-shack]

Hi,

I have put this question up before but did get much response. When trying to time pixel mapping scenes up with a track in a timeline I find it almost...well no actually impossible to get it to work. For example...Let's say i was trying to get a conical swirl to be at it's brightest point at the beginning of each bar of the track. I adjust the time length of the swirl but it's a bit too fast so I make the time longer by point 1 of a second and still too fast...I keep repeating this step until it gets really close...go one more point 1 of a second and bang! it's way too slow. It seems the points of a second change and aren't all the same. How is this possible? and is there a way to accurately time things up other than using BPM which isn't an option. Trying to get pixel mapping to run fast with the BPM on does not work.

Any help would really be appreciated.