i found lots of threads on the bra's themselves... and just a little bit of info in those about keeping care of them. Someone posted to spend a lot of time removing all the wax from the seams, which will give it a more uniform look with the car. Also it appears that at least one user used
Klasse on his with good results. Haven't been able to find any info on weither or not more aggressive products are fine for them or not. i'll keep looking though.