I didn't even get the special seat clamp.
I Just unscrewed the adjustable lever of the existing clamp, and re-fit the bolt through the rack support and clamp, tightened her up, and hey presto! It was done and solid.
(of course I had several weeks of head scratching and cursing before I hit on the solution)
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Hey, I'm just this GUY...you know?
>>>Team Critical Mess<<< (You mean it's not SUPPOSE to hurt?)
My nice new Nashbar Touring Build AKA "The Flying Avocadooooooooo!"
1998(?) Trek 700 Multitrack
1995 Trek 1220 AKA "Jimi"
Older Non-suspension Specialized Hardrock