My bike took a stationary tumble with me on it courtesy of a riding buddies foot (was meant to be a joke that went slightly wrong). When I got up to set off I ran through about 5-6 kicks without finding the TDC spot in the kickstarter. After that the hard spot returned and I haven't experienced it since. I was wondering if this was something that I should be looking into. Bike is a 2005 YZ450F with about 20 genuine hours on it (hour meter), should I be looking into replacing the rings? Thanks in advance.