What if i just revert it back to normal would that be okay? Or should i try inline fuse.
It’s up to you. I do it myself , its just a primitive way to “fast charge” a battery (if i can even say that!) and ensure that the battery still gets the 13.5-14v it wants before the main harness sends it. Inline fuse is needed, incase for whatever reason , the regulator pops, it should blow the inline fuse AND your main bike fuse before it cooks the rest of the bike. Whatever CC hyosung, regulators from China/ ($10 ones) or OEM korea (the tiny silver ones) are its enemy. If you must use an OEM regulator , try to get the updated one (its not perfect , but miles better than the teeny silver ones Hyosung used errornously early on)
Updated one : 32800HN9150

Sometimes it will be BLACK without the extra pig tail harness , either way it will have a part number on it.
If not, get an ElectroSport one (USA) , they have their own website.
If yours is charging well, then ignore this and just get a volt meter to keep a good eye on it 🙂