Just keep one thing in mind, if you are racing on carpet, get the club to stick to one compound. It becomes a nightmare when people start to mix unknown chemicals on a surface that will not only contain them, but allow mixing and slow evaporation over time.
It is no joke that the stuff we use on our tires can be dangerous if not used correctly (even when used correctly they are still dangerous). You don't need a giant petri dish incubating an unknown mixture of chemicals.
This is in addition to the fact that traction becomes flakey with the mixture (like oil and water, most don't mix).
Speed Merchant Rev7, Tekin, TQ Racing (wire), Team Tamale
RC Excitement - Buy where you race, support your local tracks.