The axe of the switch pusher in right angle looses its quality (it is plastic) and the pressing
down is not complete.
I have inserted against that piece of right angle lever a simple erasing gum piece, in which I have
made an V incission setting it tigh against the
axe central point of that right angle lever.
You can lean that gum piece against the firm plastic piece at the back of the plastic support, that resist well the handling.
Other, and I think the better solution, is screwing down an adjustment for the to the down plate of the right angle lever, insertig a screw down
from the outside carcass to reach the down plane of the right angle switch button pusher.
Yo can handle and calibrate it perfectly from outside, avoiding any subsequente work of
dismounting.
Make a little hole in the cover and screw down till obtain the right opperation level.
I have done so.
gerardo fontanes from Spain, September 2013