I boiled some CRT.5 arms as a test...

[ren]

I just wanted to add that if you boil parts just boil the parts you want softer. I recently made the mistake of boiling almost all of the plastic parts including steering knuckles, and was disappointed to find that the steering is now a little sloppier. It appears to be because of the two knuckles that connect the steering together (they point foward). I was pleasantly suprised at the durability of all the rest of the parts especially the wing mount, a-arms, and main steering knuckle. They had just enough flex. Everything boiled for 25 minutes.