I forgot to mention that I was running at about 230 degrees. I'll richen it a bit next time I run it and see if that helps with the bogging.

Question about the LSN now: the motor is a .12. I figured in the gravel the rear tires would be spinning and I could turn some donuts but nope. I'm thinking I need to lean out the LSN a bit. It does spit out quite a bit of blue smoke when accelerating. Or does this motor just not have enough power to turn donuts in the gravel?