Without knowing pretty much anything else, why would you want to go 6 1/2" from PAP?
For one, you take a chance of being too close to the track and could cause back flaring.
Secondly, if you don't invert the flare, with the flare rings being so tight or right ontop of each other, the ball (not knowing what type of ball) may become squirty, with the oil sitting ontop of itself.
I would recommend going closer to 5-5 1/2" and adjusting the surface.
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Formerly BrunsRico