>Weather it is original or not you probably don't need to completely remove it<
Some of the better advice that I have read around here. In other words, if it isn't broke, don't fix it.
Lots of online advice is given by people whom have never done the process, and the ones who have done, have learned by reading posts by people who have never done it.
I'm not suggesting that youtube videos should be taken as gospel because they're lots of people making vids who don't have a clue.
On the other hand, there are lots of vid posters who have been cranking out flawless painjobs jobs for years. Often thier post history will show a signifgant history of cranking out nice paint jobs for years. The point is that lots of those guys, people who are doing, not talking about doing, the work say if it doesn't need to be stripped to bare metal, don't strip it to bbare metal.