Living in fear...

[Black Hole]

I was just using 4 as an example as wiab4355 is what he has in his current setup.

And I was querying whether it is necessary for the OP to use mode 4.

 

[Robert4583]

Nobody has suggested just cleaning the contacts if it's just a case of some buttons nolonger working. There are videos on uTube showing how easy it is to do.
It certainly worked for me.

 

[Black Hole]

There are videos on uTube showing how easy it is to do.

And a wiki entry on this site.

Fixes / Work Arounds for Known Bugs

wiki.hummy.tv