Keep breaking seat post pivots
I have an issue, I keep breaking my seat post pivots (where the teeth are that you tighten to keep your seat at a certain angle). Once I have had a failure the teeth on the pivot point seem to have worn off.
I have replaced my seat posts a number of times over the years and i dont buy anything especially cheap, but i dont buy expensive ones either as they keep breaking.
I have a sprung saddle which is as far back as it can go (which is probably why the seat posts break). I only weigh 180 lbs and probably dont carry more than 20 lbs on my back, so I am suprised that I have this issue.
What do i do? are there any especially strong seatposts that are economical?