Started out last night by just forcing this into the correct shape with some heavy weight (back rivet plate & some dumbbells) and hitting it with my torpedo shop heater to see if I could get them to take a set in the new shape. This was a complete failure, although I did manage to melt the end of a plastic spring clamp. Went to harbor freight and got a cheap heat gun, then experimented until I found out how to make this process work. Basically, localized heat will cause the edges of these wing tips to move AWAY from the side where heat is being applied. So if the edges are flared out, then applying heat to the outside of the wing tip just behind the unwanted curve will cause them to curl in. Unfortunately, as it cools off, it wants to pop back into the same shape it was before the heat was applied. What worked best was to heat and preload the shape in the direction you want, then try to hold it there with clamps and whatnot while it cools. No matter how I had it clamped, there was always some spring back, so there was a bunch of repetition with small gains each time. This is definitely a case of slow and steady wins the race. It took most of the day to figure out a combination of braces, clamps, strings and heavy weights that would do what I needed. Then I would heat up an area, encourage it into the correct shape, then wait for it to cool and see what result was achieved. Took forever, but I think I eventually got there. During the cool down cycles, I was looking for something else to do, so I took apart and cleaned the gas caps because the fuel lube that the boys had put on them years ago had turned to the consistency of maple syrup. I also noticed that one wasn't adjusted right at all and the fiber lock nut wasn't even screwed down. After I cleaned them up I lubed them with a drop of oil and they work a lot easier.