Coolant leaking from radiator cap

[Waterloo]

That crankcase breather filter, was it replaced with the new filterless element? And was the rubber hose removed and inspected for blockage? I would pull that hose and make sure nothing has made a home in it or is clogged with something.

If none of the above works, have you checked the oil for coolant? Oil analysis? If you have a Speedco near by maybe run it in there and have them take a sample.