This is probably a dumb question. I am new to water cooled vehicles and I just replaced the radiator and thermostat on my 1994 B250 Dodge Van. After it warms up the antifreeze leaks pretty badly from from the Upper Radiator hose thermostat area - Are you supposed to put blue silicone between the hose and the male connector, or just under the connector on the gasket? I suppose that one hose clamp isn't enough ? Also I accidentally disassembled a couple of bolts that I can't get to bite when I try to put them back in - although they seem unrelated - I don't think any go into a water jacket and would leak? not sure.