Re: polini PHBG 19mm - 21mm reed block intake
That set of reeds are the dual-stagers. It's the last thing on the list of sweet upgrades but when the time comes, do it. Don't do the polini intake though. Get the Malossi one. When you get em, you'll be able to figure it out by looking at em; it's like figuring out how to use a spoon to eat cereal.