Im surprised I hadn't asked before. How dramatic is your toe-in? The way they used to do it at my first shop was to stick a rubberband under the rear side of the pad and push the arm on the rim, then tighten. A little odd, but it usually worked. Park makes a toe in tool as well, but its simple enough to make one. It should generally be about 1mm +_ a little. If its too little the pad is not engaging all the way/ and/or squeaking. Too much and the lever will feel mushy and the pad can't contact all the way either.