Vigier Guitars

The switch on my Indus has gone bad. Position 5 cuts out sometimes, and position 4 sounds quite weak and bad sounding, which is not right!
I would like to change the switch to a new one, so the problem will be fixed
So I had a look inside the Indus. (The wiring is beautiful, and it even uses a "molex" connector!)
It looks like it uses a Schaller Megaswitch. Is that right? What model of this megaswitch would work?
Or perhaps I could use a "superswitch"?
 
My Indus is from 2003 if that helps.
 
Thank you.

You can use a Schaller 105S

Maybe you just need to open the switch and clean it....

Thank you M. Vigier, for your reply (and for making such beautiful guitars    !!).
 
 I will look for one of those switches.
 
I do not think that it will work better if I clean it, because I think the switch has broken mechanically, a little bit.
As I said, if I push it to the bridge position, and push a little bit too much it can actually break the circuit, as the lever and wafer are being moved when they should not be. I am not violent or forceful with my switching, but I do use the switch a lot on every single song and all the time at practice.
 
Thank you again for the reply and for trying to help!