ITs a bit hard playing with the leaves to know how low your about to go. You can put blocks in and youll know.
OR
You can take the set of leaves out. Put them in the vice and untap the u locking thingie. Pull one of the middle leaves out (mk2) (depending on how low you wanna go) and flip it over. Back in the vice and put the lock type thing back on. As good as new but lower and no blocks. Dont know what this will do to bounce, handleing, stiffness however.
Mk1 only have three leaves so bit diff.