I noticed my new 850 SP with only about 5 hours on it likes to dog off the line and won’t free rev in neutral until it’s really good an hot. I assume it’s probably got to do with the factory plugs, I read upgrading to some NGK ILZKAR7A10 Laser Iridiums fixes these issues, my question is it safe to change to a hotter plug before I finish the break-in period?