How to prevent my craft form falling from thier bases.

My Raiders and Venoms aren't glued to their skimmer bases and fall from them often. I painted the hole where the ball from the base goes with additional paint and wash layers but they still fall very easly:( You have some tricks to make them more sabile?

I switched out all my bases for magnetic poles - makes transport easier and is pretty solid unless someone side-swipes them...which still seems to happen semi-regular

Most of mine are ok, some of them are loose, I can't tell why. But like Thor did, I'm planning on switching all mine out for magnetic bases, my friend did it with his Eldar and it seems to work much nicer.