Uneven Rub-n-buff on BKBT new armor??

Alright, I thought I did it right. I wet sanded the armor. Used Dupont automotive primer, waited overnight, wet sanded again. Looked & felt really smooth. Hit it with R&B and some parts got shiny and others wouldn't turn out. I almost burned my hand I put so much friction on it. I tried it

Uneven Rub-n-buff on BKBT new armor??

How to use rub n buff?

Some Rub n Buff Trouble Boba Fett Costume and Prop Maker

Some Rub n Buff Trouble Boba Fett Costume and Prop Maker

What Paint Colors? RESOLVED -Now BKBT Build Log, Page 6

Some Rub n Buff Trouble Boba Fett Costume and Prop Maker

How to fix this weird uneven texture on matte top coat? : r/Gunpla

Some Rub n Buff Trouble Boba Fett Costume and Prop Maker

What Paint Colors? RESOLVED -Now BKBT Build Log, Page 6

How to use RUB 'N BUFF - Avengers Endgame THANOS 3D Print

How to use Rub N Buff on miniatures.