Pat
They left the factory loose. They are a little light for 1000cc cars of today. We would take and install the King pins and spindle to the axle reach through the two holes with a small drill and mark where the set screws met the king pin then remove the king pin and drill a 1/4" hole about 1/8" deep to give the set screws a place to seat. Seems like we could get two short set screws in there.
Stay with the smaller tracks for right now. The problem is not the fit of the king pin so much as the lightness of the spindle. We have broken the spud out of them on rough fast tracks. Keep an eye out for a midget axle and convert it to your car. Even the midget spindles will be a little loose but them two gyroscope attached to them will help keep things in line at speed.
It's kinda of strange but usually it will be the left spindle that gives you problems.
Honest Dad himself
