problem with strobe image in FCP

Hi,

I am currently editing with footage that uses strobe lighting on the subject. At times, I cannot view the strobe image as it can’t seem to handle displaying one frame of picture, as this is the amount of time that the strobe lights for. I tried to export as Quicktime, and when viewing the clip outside of final cut, it is fine, but when re-importing the exported clip, it gave the same error. But, when exporting is using different settings as to it's native format (HDV) it displayed the image perfectly, and when viewing in final cut it viewed perfectly. When the image drops out, there is a remnance of it at the very top of the frame, where you can see a line of colour, this is a very partial section of the actual image displaying. So it seems it just drops out the image from about 2 or 3 pixels down, leaving a flashing line above.

I am using Final Cut 6.0.5 on:
Machine Name: Power Mac G5
Machine Model: PowerMac7,3
CPU Type: PowerPC G5 (3.0)
Number Of CPUs: 2
CPU Speed: 2.5 GHz
L2 Cache (per CPU): 512 KB
Memory: 5 GB
Bus Speed: 1.25 GHz

If anyone has any advice. It would be very helpful. I know I could export everything to a slightly different format to fix it, but woul rather find out the problem within final cut...

THANKS!!!!!!!

g