hi everyone I got my first bike its a 2001 kx 100. guy said it needed top end re done. he bomb started it to show me it runs. brought it home, cant get it to start. took the plug out put my thumb over the hole, compression feels good. fresh fuel, coolant, oil, plug. only thing I didn't do is clean air filter. any body have similar issue. or should I just rebuild the top end for something to do.