That would not make a different. This would be the same thing for P2 users, you are not coming through the Kona but there is no problem playing out. I have also captured Varicam tapes via firewire to get the pull down removed on ingesting and once again the Kona plays them out just fine.
Normally there should not be a problem, but since there is someone in the workflow is setting something wrong.
If the client is exporting the footage are they making it truly 24P instead of the correct 23.98?
I know for me I have to see the problem to be able to find out what’s wrong. If you could post even a 2 second clip it might be easier to get an solution.