Warp 4 /mega 16-15-3 3000kv... Pinion???

I have read different things.. One said that I should use a 13t pinion the other a 15t. My Warp 4 is running a little hot. I am doing mostly hover and fast circuts. Using align 35a esc. 315pro blades. on 450x with a kokam 3s 2000mah. +/_ 8.5 pitch. head around 2100 rpm.

I can't figure out if I am running too strong or too fast. Maybye should cut the difference and go for a 14t?

Helis:
SE
430L Align
CC35
GY401
3 x hs-56hb
hs-50 tail
jr 770s PCM rx
tp 2100 3s
reinforced blue anodized landing gear
deans power mico ant.

And I also have "Patch" my 450x (first heli!!! It's crashed more than the stock market"
450x
jr610ul rx
4 x jr nes-241 servo
GY240
Warp 4
Align 35amp
kokam 3s 2000mah

[Old man]

You stick to the 13T the best head speed for t-rex is around 1400 Rpm i use 3200Kv alighn motor and i have around 1600 Rpm with sab cf blades

[tilburyboy]

Hi,

I seem to be getting a little hot around the motor and esc, i have recorded
186f on the motor and would think that this is quite a lot to high.
Will changing the pinion help reduce the temp, at the moment i have the 13t.
I am running the 430l 3550kv and align 35G esc.

thanks to anyone who can help.