I had (and still have) the same problem with both my front seats.
I managed to move both of them back as far as they will go for now so that I can drive and my passenger doesn't have knees in chest syndrome.
To fix the problem I'm hoping Nakman will be able to send me some caps.
Temporary though - to move the drivers side i managed to jam my key under the rod and fiddle with the button while sticking my finger in the hole to force the rod back - it hurt but it worked. The passenger side I pushed a bolt that was slightly smaller in to the cap hole gap to push the rod back. It took a bit of rocking back and forth on the button, but the seat finally managed to go all the way back.