Thanks, Knot.

If you want a link to the product in question, here it is:
http://www.amclassic.com/seatposts.html

Maybe it's an OK solution if you only correct slight LLDs with this method? Like a mm or two? I dunno.

At first glance, I really liked the idea of correcting the LLD without having to shim my cleat, especially since I've switched to recessed cleats on my road bike. Without any correct, my low back can get heck-a-sore after a couple of hours in the saddle. And now that my training rides are getting into the 3-5 hour range, well, let's just say that my legs aren't necessarily the sorest part of my body after a ride.

Oh well, my next approach will be to use full foot orthotics in my cycling shoes. In effect I'm going to put the shim inside my cycling shoe and enjoy the convenience of recessed cleats and have a happy back to boot! At least that's my theory...

-- Melissa