[HWYSTR455]

You know, that's a very good point, many shops balance using the 60 mph sweet spot, and in many case that isn't even close. I know there are some cheaper balance machines that don't have as good a tolerance either, and I had to scout around to find one that will balance to my liking.

I think you may be over-engineering this issue, (something I'm guilty of regularly!), and is probably simpler than all this. Call Denny's or Inline, or Dutchman, any should be able to give you a lot of info. I would also stick with 1350s by the way.

I still say that diag tool that uses the harmonic freq to point you in the right direction is the ticket. That gets away from looking at it from a just angles point of view.

.