I ran one tank through it on the ground (the book on the engine said nothing about break-in). It was at half-throttle max until the end of the tank. Then I took it to the field and an instructor had me run a second tank through on the ground between half and full throttle. That was when the issues started happening. Since then, I've tried to fly it, but these issues have continued. Should I run it on the ground some more and just set it rich?

Thanks!