Did you change the counterweight? I have both the Porter Cable and the Griot's random orbital. I have had no problem with the PC. if it is not rotating the pad, you are pressing too hard. The other one I use stalls out easier than the PC. The stroke is small but it just gives you more time to "enjoy" your caring for your ride.
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F06 M6 Grand Coupe CP
Sapphire Black Metallic
The drive is the destination

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