Surly seatpost clamp sucks -- Salsa lip-lock cured it.
Hey, I love my LHT but have had the issue of having to really torque the "Surly constrictor" collar that came stock to keep the seat post from moving around. I finally torqued it down too tightly when adjusting the saddle position and it snapped.....
I bought a salsa lip-lock and noticed an immediate improvement in holding power when I installed it (i.e. it took probably less than 1/2 the force to tighten it up than the surly).
Just wanted to plug for this collar -- it's great
I thought I had issues with frame construction, but I think my problem was with the stock collar alone.