Greetings. My 4301Bs arrived. There is a small little dial at the bottom? What does it do and what should it be set at?

Now I am going to test these against the L46s ans what suites me best. Funny thing. It seemd as if the 4301Bs which are slight shorter but slightly fatter than the L46s weighed a bit more. At least my back thinks so.


Best Wishes,

DK