Love the Micro Galaxy Droid Fighters! I'm glad that they gave separate wings for both fighter and walker; both sets work extremely well for their intended mode, though I have a particular affinity for walkers so they may stay this way, hehe. Note for the blue Droid Fighters, the legs were attached upside down for both sets of walker legs! Easy fix since they're just attached with ball joints, but interesting error.
>>10805738I also don't think boiling water is necessary, just hot enough to make the antenna pliable. Several good suggestions already! For parts that bend back into their original shape, I find it can be effective to heat it up, completely bend it in the extreme opposite direction (so for your antenna, bend it outwards to an extreme degree), then run it under cold water to set it. Give it some time and then see how much it bends back to its original shape; repeat as needed until it no longer returns to the original shape and stays straight. The idea is to sort of train the plastic to have a new "original" shape that will no longer bend over time.
I recently used this technique on a Micro Galaxy Clone Gunship where one of the nose guns was bent and would return to the bent state over time. Heated up the gun, bent it to the extreme opposite direction, and after a day the gun straightened out and has stayed straight ever since.