Stop in for a cup of coffee

straightlinespeed said

Problem I found with those while researching them is the squared off wheel lip. Those move in a circular motion and do not work on the rear wheel wells of the darts

Click to expand...

It's really in how you use them, the radius must be continually adjusted when doing a flat top like the A-body and work slowly with small rolling pressure at a time.

You can also use a tool like this...