I have a friend that has an "07 roadking the other night while riding the vehicle suddenly sounded like it was running on 1 cylinder he pulled the front plug and found that the electrode had been crushed all the way closed. Any ideas on why this happened. the bike has 5,000 miles on it and he just switched pipes and air filter to stage 1 kit. he did not have it re-mapped after that. we thought it night be from a piece of carbon but i thoguht with the dtergents in gas and oil its really hard to get that big of a pice fo carbon built up in the motor that would cause the poston to be able to slap the carbon up into the plug. I also wasnt sure if piston travel can incrase suddenly like that but yet after chaging the plug with a new spark plug it has been running fine and we have traveled in the past 2 days around 100 miles. any ideas would be great