Ello! I've recently started having trouble where my bike seat will tilt back on it's own. I've tried tightening up the seat when I move it back to it's proper tilt, but it tilts again soon after. I've taken it to the LBS, and they say my seat post is fine (I thought I might need a new one) and they tightened it up for me, and it was good for the first 5ish miles before it tilted again. The LBS isn't sure what to do, but they are sure that the seat post and it's components are in good working order and don't need to be replaced. Should I replace them anyways? Or is there something I can do that doesn't involve replacing the saddle, stem and such? The seat was fine until Tuesday when it started doing this, it was rather windy but I don't think that has much to do with it. It makes an otherwise enjoyable ride quite annoying and even a bit painful.
Any help would be appreciated.