Does anybody else run canon 580exii 's with flextt5's and miniTT1, having random problems with it? ETTL seems to be not working properly, sometimes.

I have checked out pocket wizard site and noticed US customers get a free 'sock' to stop the interference. Does anybody here down under have anything like that? i cant seem to find anything.

Also how do u go about mounting the 580exii and flextt5 to a umbrella bracket or soft box as the flex raises the flash another inch or so?

cheers