[notout86]

After I checked to understand the system and what people were talking about with sealing where the overflo tube goes into the top of the bottle I created a monster.
I pulled the tube out to inspect it. When I pushed it back the tip caught somewhere inside going down the bottle and kinked back on itself. When I popped the bonnet next day there was dried coolant spots all over the engine compartment and the tube had blown off where it attaches near the radiator cap.

Also, the tip of the tube down the bottom of the bottle was cut at an angle such that it might seal against the wall of the bottle when the coolant should be sucking back to the radiator. I cut a few notches in it just in case.