Tvheadend

Hi,
As I have a dual TV tuner, I would like the (XBMC) live TV to have the highest priority, over the scheduled recordings.
Currently, from what I have seen inside my syslog, the live TV has a weight of 150 while the "Normal" recordings have a weight of 300 and the "Important" recordings have a weight of 400 (see attached log output of tail -n 3000 /var/log/syslog | grep weight > /tmp/syslog_weight.txt)
Is there a way to increase the weight of the live TV to a value like 500 so that it never gets interrupted by new recordings?
Thanks!