For all you that currently have Grom's (which I do not...yet), Pit Bull is getting ready to fabricate the pins for their trailer restraint system, but needs one quick measurement: the distance from the tip of the axle to where the axle nut starts, just the distance of those few threads. They have the axle and nut, just need to verify where the nut fits on the axle. Can you measure yours and post here?