Hello everybody,

I'm drawing an engine. I've completed the first stage (piston heads+rods+crankshaft) and the second stage (camshaft+valves+pushing rods+rockers). Everything goes fine into the two separate stage (all mates work properly and the movements are excellent) but, when I put them all together SW starts to go nuts and shows me many errors. Both stages are different subassemblies and I turn them into flexible inside the final assembly so they can move. It seems to be a random error so I don't know where to start. I've cleaned up the models a million times but I can't help thinking that it must be a mate error.

Thanks in advance.