Id fit the heatsink, it wont harm it!
Be interesting to see how fast a pylon prop pull the wasp. How hard have you tried to turn the wasp yet? Pulling 130mph turns in about 1m radius is one of the coolest things it can do
Im still happy as pie with my 16/25/2.5S on 3S with 8x7+5's in the wasp, suits the wasp perfectly. Does around 120-130mph flat out, folding prop means its slippery in a glide, and I can get 6minutes of flying with lots of throttle, well over 10minutes if less throttle happy.