You are a godsend...!
The pins weren't properly connected thus X and Y worked because thats in the base and the rest wasnt recognized as the connector popped out while screwing the grip tight.
Thanks!
Also a warning from me to every new user:
Be ultra careful, that the connector plug is sitting correctly in the base socket, before screwing the grip to the base.
I did not during one of my assemblies, had a bed connection and a bend pin afterwards. Luckily, I was able to bend the pin back into place, again very carefully.