I've been printing a set of parts for my second mendel 90, but I can't seem to print the ribbon bracket bridges. My printer bridges fine on all the other pieces, but I guess the ribbon brackets are just too long. Any tips on getting my settings right to print these? I read that you should lower feed rate and flow rate and then lower the ratio between flow rate and feed rate, but it didn't seem to help too much. I then tried using the bridge cool feature in skeinforge, setting it to 5 degrees. That helped a bit, but I still can't print the ribbon brackets. Thanks for any help.