the boiling bit sounds interesting...might try them from all the white tamiya blades i've managed to set aside (Stopped using them after the 1st few pairs broke on me).

i've used the 3Racing 3.5mm blades with relatively good success (2-3 racedays before they need to be replaced).

i'm also trying the white ones with some AW grease on the pinholes and the outdrive... hopefully that helps keep them on too...