Sorted now, this pretty much describes exactly what was up, I’d taken it out to attach the boys tag along and when I put it back in must have kinked the cable housing..... Basically when putting the seatpost back in make sure you pull the cable at the top of the down tube!I've not had any problems with mine, but I had one on the bike I test rode in Nov'18. The saddle wouldn't move. I took it back to the stand (it was a test day) and the guy removed the remote from the bar, letting it hang loose and then pulled the whole dropper clean out of the frame. The previous rider to me must have been a lot taller and he had pulled the dropper body a lot higher up than I wanted it. When I pushed the body down into the frame, the outer cable kinked badly enough to jam the inner cable. He straightened out the cable and then pulled on the remote as he pushed the dropper back into the frame, keeping the cable taut as he did so. Everything was clamped back up and away I went! No further problems for me.
I caught a look at the cable and it looked a bit chewed up, so it must have happened several times. I suspect that because the guy had no hesitation and just went straight to the fix without any delay to think about it. Not an unexpected problem for a demo bike with a wide range of riders using it.
It's worth a try!
