I’m about to buy a friends RC. The bike is a track bike and half the miles are track miles (4000 miles). I’m buying the bike to ride on the street. The total miles on the bike are around 6000. Am I making a mistake buying this bike? What should I look for? It has tons of mods i’ve kinda did a half ass search on prices and for the miles and mods it’s a killer deal. Need input.