well i tried chipping it,the hell with that so took one of those small propane torches and heated the tar,even on the 1/4"+ stuff the putty knife peeled it off like warm butter,it sitll has to be washs down with so chemicals to get the residew off,but it sure beats the hell outa chipping it,its a one person job but it goes faster if it two people one heating the other scareping,belive me its worth taking the gas tank out,for fire protection and when finhesed jusr spay her down with water,just incase theres hot spots,use a flexable putty knife blade shappened on grinder,worked great for me.les
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