Well if you have the correct amount of oil in the forks then it can only be the oil weight that makes a difference, if you used a standard 10 weigh then empty it out and use a 5 weight oil, if that's too soft then your into mixing half and half with 10W and 5W oil to get about 7 weight. Also remember if you have ridden anything bigger than this then the forks on little bikes can seem harsh just due to the fact that they weigh bugger all! Hope that helps? Just one more thing, if your going to stick around then please say hello in the "New members section", you get more feedback if your a regular visitor and not a one hit wonder, Just sayin!
Read this if you really want the low down on fork oil, it should really be graded in Centistokes.
https://transmoto.com.au/comparative-oil-weights-table/