Originally Posted by Coyote

I remember taking extra care on that part at installation time but when I checked that, it wasn't negative... (probably because if you put all the number written, then, even if you push +/-, it won't change, you have to remove the last '0' to get it to work... so lame of them).

So corrected that. I'll update you with the result, but unfortunately, this won't be in the next 2 weeks, as I won't be able to drive it in the mean time.

Thanks for your help !