Sorry Bruce,
I ask the same questions you did, when i'm trying to fix a problem.
Clarion 8.0.9304
Nettalk 6.37
I was able to replicate it in a couple of the examples and i managed to get it to 25:00
I've created a small AVI so you see for yourself what's going on.
i'll send to you on your other email account since I can't post it here.