hey, for anyone who has tweeded, what grade of tweed did you use? was it an automotive grade(stirdy backin, i think) or a tweed from an upholstery store? if it was from an upholstery store, does the tweed hold up well? is it better to go with the automotive tweed, or does it not really make a difference? i will be tweeding the headliner and the two posts on either side of the windshield...thanks for the help guys!