How the K%#(DFMSP#(#*%U!! does one loosen the tub nut on a Maytag? Is there some trick I need to know other than placing the spanner wrench over the thing and whacking it with a hammer? Is there a pin or something that has to be removed first? I DON'T want to damage the gorgeous blue tub on this A106 I just bought but it's being very uncooperative. I poured boiling water over it, I scraped off all the calc, but the thing wont budge.