The aero seat mast on my Trek Speed Concept gradually sinks during rides. I understand that this is a relatively common problem on TT bikes with aero seat posts. I’ve tried a bunch of things to try to get it to stay up, and it’s better than it was, but it still gradually falls over 2 or 3 rides which changes my position.
I’ve used carbon paste and set the torque with a torque wrench. I’ve also played with shims and tape on the post to try to give it more friction, but nothing seems to hold it in place permanently.
Can anyone recommend some good tips and tricks to help with this problem?