b4 and lipo , weight ?

[charles08]

Hi.
I am racing lipos next week end for the first time and won't have much time to practice since then .
So i am wondering if you guys can help me on where i should put the weights in the car knowing that the lipos i 'll run are 260 gr ( Corally 4200 30c).
I don't have the heavier front bulkhead and i'll race it on carpet .

Thanks to all !