Thermostat Housing Gasket leaking, managed to get the 3 nuts off the studs ok, but can't shift the housing up off the studs, tried levering, small chisel at the join and hitting upwards with a copper hammer, but scared to hit too hard as its aluminium so probably corroded onto the studs. Would a blowlamp be ok to use on the aluminium? Suspect that will have to drill out down side of each stud and split housing with a sharp cold chisel, short term maybe easier to resort to Radweld and forget about it. Any ideas?? Steve