Moin!
Mein Deutsch ist sehr Rustigt... Ich kann ein Bischen verstanden, aber nicht so gut deutsch screiben..
So sorry for switching to english, I think you can understand this better than my rusty german
Anyway, I had similar problems with my servo board, it works OK if I have it alone in the COM-card, but if I add in the KEY-cards, then the servos want to press against the edge just like Roger said.
I think there is a short circuit that connects some of the data-IN lines with data-OUT (key-card stuff goes IN, and servo is OUTput data) - it could be something like that, so I need to investigate. Both the key and servo cards work great alone, but when used together the key-card stops both the servo and led cards from working.
I suspect a soldering error on the COMIII-card.
Gute Nacht!
Tuomas