Guess something got lost in translation.
With like for like, you mean replace with the original one?
The issue are not the micro switches but the spring.
After one or two years the spring wears, so when gate is open and want to close, the spring swings, so it moves only for 30 cm, then it stops, because the "closed" contact get hit by the swing
Tightening the spring doesn't work, because then it doesn't move anymore