A16: No, No, No! The gear legs are heat treated at the factory, and any heating you do will weaken them and will likely lead to a failure on landing (i.e. you will wreck your airplane). There is an old service letter, and a service recommendation #5, both of which offer an alignment process and specifications to follow. Luscombe Association newsletter #55 may help. The information on the specific hardness is in there. It also states that AC 43:13A requires the re-heat treat, to be legal. On page 3 it goes further to tell the numbers. 170,000-180,000 UTS and Rockwell 38-42 C scale.