Carrera4S- Welcome to Autopia!
Don`t worry, it`s not you; I could never get much done with a polisher like that either unless I:
-Used aggressive 4" or even 3" pads
-Used a very aggressive product (M101 for me, others like Griot`s Fast Correcting Creme)
-Still spent as long as you did...yes, hours and hours and hours
So while it`s easy for me to spend your money for you, I`d upgrade the whole system. Maybe that approach works for others, but it doesn`t work for me and there are plenty of different approaches that *do* work fine for me.
BUT...fair warning...I`ve been doing this stuff for over 40 years and it`s *still* harder/longer work than what some might have you believe. It takes as long as it takes; you`re just incrementally abrading away paint like sanding scratches out of a piece of wood. Only so many variables you can tweak.
EDIT: Oh, and note the volume of negative comments regarding your choice of product and the absence of sincere arguments to the contrary. That`s often a clue. And while I`m at it...
Don`t believe everything you read/hear/see on the internet when it comes to Detailing, especially about how "quick and easy it is if you just use this and do it like that..." I bet you wouldn`t be so credulous about other subjects
