hey, with this 50cc kit it comes with a piston with a booster window in the piston but then the jug has no corresponding ports?(1st picture) am I missing something in my understanding of boosters? or is that just the way it comes and if I so desire I can manually add some like the 70cc has(second picture)
http://www.treatland.tv/v/vspfiles/photos/puch-treat-kit-50cc-head-party-2.jpg