Got some K-seal. Like rad-weld but supposed to be a permanent fix. Got engine up to normal temp then pouredit in and went for a run. Still leaking after about 10 minutes but within half hour no leak at all.
Will keep an eye on it, but they give a lifetime guarantee on leaks fixed.
Cuffer, Ricketts didn't even cross my mind. Been there for car rad but didn't think about them for the bike.