I've been breaking down my engine ('61 TR3A)to pull it, but for the life of me, I can't get the oil drain plug out. I've soaked it with PB blaster, tried a breaker bar, even to some extent an impact wrench with a universal joint(only way I could get it to reach). Anybody have any thoughts as to how to to get the d*** thing out? Would like to drain the engine before pulling it, but its looking like it may have to come out full of oil then get taken out when its in the open. Any thoughts would be greatly appreciated.