Fried Lehner 1940? Help!!!

Too big is almost as bad as too small. If the motor is way undergeared, it's going to run hot, which is probably what will happen with the 22 series motor. I'm thinking that you might have a hard time getting enough of a load on that motor in a 12lb truck. My MM and 9XL move a 13lb truck around without problems.

Of course, I've never run one and I'm just guessing.