I have a crf250r 2005 purchased couple of months ago. When I have bought the bike bloke that was selling it to me got it started after second kick. I have load the bike on my trailer on its side brought home and tried to start it aaaaaand nothing not even a sound. I have then took the carb apart and rebuild it. Just tried again and still nothing. Checked for spark on plug and all good. The only thing that has not changed is that spark plug is bone dry despite me trying different options to start it. Getting desperate here and need help please.