I'm curious about the gear lube quantity. Does yours still require 180ml of gear oil? Is the quantity still stamped on the cover? Lots of machines are designed to fill the gear oil until it comes out of the fill hole...but if you do that on our class of Kymcos (the 125 / 150 / 163cc) you will have overfilled it and the excess will blow out into your airbox, ruining your air filter.
The owners manual on my 2018 Like 150 showed an incorrect amount of oil. The service manual had a different amount. I'm pretty sure the correct amount is 120ml but I would call the dealer and check that.