If you are running these, how did you do it? I think these can work in both 7 spring and Cosa clutches - there's some good info on YouTube. I just ordered some of these after helping Falcon modify a set for his stock Cosa basket.
He also has the complete BGM version w/ wider slots that can accept unmodified corks. We will have a chance to compare homemade to the overall heavier BGM setup. If you've got the BGM, how's that working for you?
Gaging the width.