Hello everyone, need help as usual. I just picked up Harbor Freight's cooling system pressure tester.http://www.harborfreight.com/radiato...kit-69258.html and it seems none of the adapters will fit. Some background, I have a new DMCH radiator and I still have an old style plastic header bottle. Does anyone know of an adapter that will fit and where to find it? As always thank you for your help - Nick