Thanks for the comments. The rudder stop is in the correct position relative to the rudder horn, so it can't be moved. I could round the bottom corner off, which would allow the cable to slide down below the stop, but it would soon wear away the aluminum stop from the constant rubbing, so I don't think that's a good option.
I think the current arrangement of the clevis probably looks worse than it really is. My bet is that the bolt and clevis is still stronger than the thin section of aluminum between the hole and the edge of the horn. Still, I'm not sure I want to leave it like this. I've thought of a few options to strengthen it up beyond question, but I'm still deciding if it's worth the hassle.
FWIW, I think this problem is a result of the vertical placement of the vertical stab on the fuselage. There's actually a conflict between where it supposed to be, and the location for the lower bolts. Those bolts have to go through the tailwheel spring weldment, and the lower hinge weldment. Too high, or too low, and you don't get good edge distance on one or the other bolt.
I set the vertical height to make the edge distance correct for the bolts, because I figured that was more important than anything else. As a result, the vertical stab, and rudder are lower than they should. If they were higher, the stop would be higher, and the cable would come up at it from a better angle to clear the stop.
The other problem is that the chain for the tailwheel rubs the bottom of the rudder tip. Basically, the whole rudder horn could stand to be lowered where the cable, and chains attach. I've thought of a way to effectively do that, but again, not sure it's worth the hassle, though it will almost certainly bug me until I do it
Thanks,
Rusty