Hi Duncan

Thanks for the input. But the problem is, it seem so, a wrong mounting plate at nose gear. A colleague of mine, which is flying the large viper too, told me, his mounting plate is a little bit longer and he has app. 6 mm space between the metal rod and the servo.
I sent already a Mail to SM. Morne has no idea about that, but a replacement is not yet in discussion :-(.
I attach some picture with a ruler. Perhaps you, or anyone else, can check the distances at your Viper. Sorry for the european ruler :-) everything is in mm.
A calculated solution would be to mount a seperate 4mm aluminium plate onto the already installed servo mounting plate to move the servo app. 10 mm more into cockpit direction. Then the gear should retract,... but i'm not yet ready and really willing to that. The landing gear costs a lot of money and i expect a working one for the money :-)

Best regards
Rainer