In addition to probably being too lean, your prop is too small for that engine & it is likely hitting 16,000 RPM plus. The combo of very high revs & perhaps a very lean mixture will quickly kill the engine as dead as a rock. I hope that you are using fuel with some castor oil in it!!

A 10-6 is really a break-in prop for that engine & it is also wrong for a 3D application. You need a large diameter, relatively flat pitch prop that will let it turn ~12,000 - 14,000 RPM range. A 12-4 would be a good choice, as would a 12.25-3.75 for a 3D application using that motor.