Focus cast bar

[TJ]

Im using the unit frames "shadowed unit frames", i find that in pvp the blizzard frames are better to use as my focus, im using quartz for cast bars but this doesnt seem to cancel the default blizzard focus cast bar appearing so i have 2 cast bars (1 default blizzard and 1 from quartz).
Is there any way to disable the default blizzard frames focus cast bar?
Thanks.

[palthis]

In SUF, try hiding the Blizzard cast bar option? I don't remember if there is one atm but I have never seen this happen though I have both of these installed.