I new this Pro 4 spot would die down.
But anyway; I raced(mostly just ran it); but I ran it for the 1st time with the Spool installed. . . . .It runs very well. I`ll never run a R.C. Car without a Spool again. It totally out-ran My Evo 5 by 3 seconds(both kits have the same electonics). I ran the kit very close to the box set-up.
Take Care