Someplace here... I put a picture of how I do it. No StewMac tool needed....
Just get a couple of fender washers (no pun!) and a 1/4-20 nut and bolt, and get a nice rubber washer too. The rubber one is either in hardware or plumbing at the big box stores. Make sure your bolt is about 2 inches or so long.
The pecking order is as follows -
Put the big fender washer on the bolt, put the bushing on the bolt, put the bolt thru the hole. Now put the rubber washer on the bolt and another fender washer on it. Now put the nut on it. Tighten till the bushing is seated. Undo the nut and bolt. There's a "screw press" that cost you maybe nothing if you got hardware laying about, or a few dollars and the agony of finding a rubber washer at Home Depot if ya dont.