[Barnsnake]

You say it is pushing coolant out around the radiator cap. Is it not sending it to the recovery tank?
If the upper gasket on the cap or its corresponding surface on the radiator neck is damaged it will leak around the cap and it won't draw back from the recovery tank when it cools off.
You may also want to check the hose to the bottom of the recovery tank to make sure the radiator can push fluid through it. It's also possible the vent for the recovery tank is not functioning. The top of the recovery tank should be freely vented to the atmosphere.

Keep us posted on what you find.