I brought a used Baja Dirt Bug for my Grandson for Christmas. The stock engine is so under powered that I purchased a Predator 212cc from HF an installed it. I have putted around the house at low to mid power for about an hour, and let it idle for about 1 hour. Is this enough break-in before I change the oil and adjust the chain or does it need more break-in time? Thanks in advance! (this is a awesome engine!).