cut roughly 3 to 4 threads off the ends of the bolts and then finish them in a lathe or grinding wheel and then with a wire wheel. And instead of using nylock nuts you should use jet nuts or K-nuts with anti seize and torque them to spec. The nylocks are weaker and will eventually come loose due the nylock. I would hate to see you loose nuts or destroy tires because of little details like that. Other than that very nice.
Shawn Lane "Project Never Ending" It will be done sooner or later.