I should have said that I have tried the insert. I found I could never get it quite right, either 5mm too high or 5mm too low. I still have both said inserts so maybe I need to give them another go, but I was wondering if there were other solutions. Is there a Brompton seat post that has markings?
Current method of ensuring correct height for Mrs M_V's seat is just a sharpy line around the post/ It does wear off but takes a good few raises and lowerings of the post to do so.
I should have said that I have tried the insert. I found I could never get it quite right, either 5mm too high or 5mm too low. I still have both said inserts so maybe I need to give them another go, but I was wondering if there were other solutions. Is there a Brompton seat post that has markings?