Re-valving the stock KYBs

[GG221]

I am wondering how much of a difference it will make to revalge the kyb suspension on a 2018 300. Everyone talks about how great the KYBs are right out of the box so would getting a professional re valve make much of an improvement? I am a fast B racer in XC races but I also like to do a lot of single track/hard enduro riding...I haven?t raced any of these types of events yet but want to in the future. I have an EVO and racetech guy near me who are both very reputable and I can get the EVO at a pretty big discount. Would it be worth it at my level and type of riding?