Zealot

Okay so I have been out of paper modelling for a while drifted to plastic and back into the railways. But lately been building again dug out my old models I printed a while back (mainly star trek) anyway I'm building Borg sphere just wondering anyone got and tips on closing the thing up. I member last ship I tried the Starfleet medical ship trying to join the sphere to the hull I ended up it warping and sphere squashing whiles trying to fit it into place.