If it’s prior to endwalker guides they may have outdated information, you can do your melee combo at 50/50 now (or 60/60 for enchanted moulinet in aoe). At higher levels when you have access to verflare and verholy you’ll want to have the amount skewed slightly (like 54/51 as an example) so that you get the guaranteed proc from the respective flare or holy you follow up with.