[Zope] Session Timeouts

[Dennis Allison]

I'm forever forgetting to reset session timeouts when I restart Zope.

First, is there a way to change the default without brain surgery?
The 20 minute default value that's used is deep within the __init__
for Transience objects.

Is there a way to reset the timeout without reinitializing and killing
all active transient objects?  I looked at the code and it does not seem
possible.  Unfortunate, in a way, since resetting the timeout value 
kills all existing session sub-objects.