Had a question about small craft in orbit. Trying to design a craft to land on Moho so I am trying to keep it considerably small and compact. Using a Mk1 lander can and putting most of the fuel tanks, batteries, etc. inside the can to limit physical size. The problem arises when I try to use RCS thrusters for any type of docking or maneuvering the craft literally goes crazy, and all the RCS thrusters are firing to keep it steady. I've basically done everything in the game unmodded, never had an issue with larger craft and docking, maneuvering etc. but have issues when I go small. Also have issues with it when I build HECS2 probes that are compact.
I try to mess with the reaction wheels, turning them off and what not, but then lose the ability to easily dock and what not, should I just put a separate reaction wheel on the craft and turn the reaction wheels off of the lander can?
