I'm using the EC2 "PsyOclone" engine on a set of satellites. I'd have liked to use the EC1s, but they don't have snap points under the engine to allow for coupling. But I got the satlites into space (On a rocket using the EC6. EC6 works very well, except for it's similar lack of snap points.) only to discover after uncoupling that the EC2 can't operate in a vacuum. Is this working as intended?