I stand corrected. I ordered a Surly Stainless clamp, which is what came on my LHT. I opted for it over the Constrictor because I figured stainless steel was stronger and more durable than aluminum. The Constrictor does have a stainless bolt, but I wanted an all steel clamp. I also figured if Jenson was charging $5 more for it then it must be better. Silly reasoning for sure, but that went in to my decision, so take it for what it's worth. I ordered it prior to picking up my LHT, so the fact that it had a stainless clamp did not figure into my decision. I now have the stainless clamp on both my LHT and Big Sur. I don't know when I'll get the Big Sur back out there to test the clamp, but it likely won't be anytime soon. The seatpost on my LHT has not budged at all. I don't think it's going anywhere. I can't believe you can't get yours to hold. I tightened mine until it started creaking, and then a nudged it a few more creaks.