What is the proper procedure for resoldering a rib that is loose for an inch or so? I plan to use a small butane pencil tip torch, acid flux and low melt temp solder. Does one simply clean the area, heat with rib in place and flow in solder? What about a flush to remove any acid inside the ribs' cavity? Use bicarb of soda, then flush with water and blow dry cavity, followed by a good drying and then a shot of WD40? I am not anticipating any loose ribs on present guns but would not want to bypass a good deal on a gun needing such a repair. Thanks, Chopper