Hi Brian.
Sorry I can't help you; but, maybe you can help me.
I own a 2000 Jekyll. I'm looking to the Pivot Nut (or the complete Pivot & Nut) for the Swingarm. I think it's compatible w/ other cannondale model from 98 to 2000.
Please let me know if you have one that you can sell it to me.
Thanks & good luck w/ your search.
From what I can tell, this also might be a solution to your problemBrian, this information is excellent and very useful.
I really appreciate your support.
I'll let you know when I have my bike back on the trails.