One good solution...

http://www.totalmini.com/forum/90-ba...t-one-too.html

 

Maybe a little Gummi Pflege on the seals would help. It keeps the seals from cracking and drying out. I used to be able to get it from the BMW dealer but I think they no longer sell it.

I found this stuff on Amazon, not sure if it's the same stuff but it can't hurt:

http://www.amazon.com/einszett-91480...7628759&sr=8-1