You may want to re-review you process... What size pads? If they are 6.5", you may want to step it down to something smaller, 5.5" to 3.5-4" pads.
Power Gloss is aggressive, it is probably not fully breaking down and leaving it's own micro-marring. Regardless, a finishing step or two is required after using Power Gloss, the darker the color, the more fine defects/imperfections WILL stand out until properly addressed.
Less is MORE! Start with a lesser aggressive polish, don't know what you have though. With a Porter Cable (or similar), the KBM (Kevin Brown Method) is your friend. You really need to provide in depth details of your steps, products and tools used or available at your disposal. I'm sure someone else will chime in.
