Ridley Aerodynamic Seatpost Bolt
To make a long story short the bolt that holds my saddle to seat post has now broken twice. The first time was a really bad fall, the second time, I was lucky. The first time it happened there was a persistent squeaking noise that I could not figure out the source until it broke. This was the bolt that came with the bike. I brought to my local bike shop and they simply told me to buy a new steel bolt. I did. Yesterday it broke without warning.
My question to the group is, is there a special bolt that I should be using? I am concerned that a very expensive bike is about to take up residency on my indoor trainer as I cannot trust it. I can provide photos if it is of value.