Had a problem where the lower pusher stuck out too far and was slightly wobbly.
Anyway, uncased the movement, dismantled and cleaned the pusher assembly. Removed a whole load of dried up loctite(?!) from inside the cap, reassembled it and it's now perfect.
Good job I did this actually as a)was in danger of losing the pusher cap itself and b)might never have noticed that the 'skilled watchmaker' that serviced the watch last year hadn't properly fitted the plates that hold the movement tight into the case!
Now my 2nd favourite Heuer :-)