Just got an axle saddle from my local custom trailer dealer. He had 3 different styles, so I took what appeared to be the heaviest duty for 6 bucks. Fits perfectly between the u-bolts. I took a copy of the picture (elsewhere in this thread) showing the saddle on the jack and he thought that was a great idea. I was surprised he hadn't seen that before because these folks deal in all kinds of cargo, utility, and livestock trailers.