Are you sure that stupid Moog bar isn't just your problem? According to your thread, it is a full 1/2" longer (31 5/8 vs 31 1/8). I know for a fact, because I just dealt with sortening a track bar, that exactly 1/2" was the difference for me between a rubbing coil spring and a dead centered axle. (I'm at ~6" of lift). Make them take that Moog back. Get one that is the same length as stock.
For a custom track bar, you're going to spend like $300+ and not have solved whatever the problem actually is. The good news is that it will be adjustable, so whenever you figure out the problem, you can just lengthen it!
Paul