polish

I'm using a PineCar Kit and I was wondering if the nails need polished. I wasn't sure because I know on some of the kits like BSA you have to polish the nails. Is polishing the nails necessary or will it just go faster?

My son and daughter both entered cars in the local pack derby. They were the two fastest cars overall. Now as we prepare for the council derby, I am expecting a little stiffer competition. We used graphite on both cars, and we ran with fully polished axles, but the wheels only had a "light...