I'm use mouse to turn,changh gear & use keyboard to contral break,gas,clutch and other.

now, If I want to look left ,right or F1-12, I need to relax the gas or the wheel(mouse), If I relax the 1st, I'll slow down, If I relax 2nd, I maybe lost contral.

If I can use the number key, the length between mouse & look left\right & around will be shorter, I'll no need to relax the mouse to look the other.

than, I hope that we can set the pit stop setup & Break balance key(F11\F12+↑↓+(shift+←→)now) by ourselves

Odd setup, I thought most mousers used throttle and brakes as the mouse buttons, that way your other hand is only need to change gear and is otherwise free to do anything else. At least that's how I used it back when I raced with mouse.

I drive like scania with no reaching problems. It always felt weird to have the gas and brakes on my steering input though...

i used to be a mouse user for a long time...

W- gas
S-brake
Q-handbrake
Space-clutch
A-look left
D-look right
X-look back

mouse-steer, gears..

thats all close together..

mine:
Z:Clutch
X:Break
C:Gas
Q:Limt
W:look Left
E:look Right
A:horn
S:flash
D:reset