Grose Jets

[lesnyd@bb1t.monsanto.com (Larry E. Snyder lesnyd@monsanto.com 314-694-3626)]

OK, I admit it, I'm really stupid about the jet/needle interaction on a
Z-S CD150. I bought a pair of Grose Jets along with my carb rebuild kits
and I feel kind of lost...

Do I still need new needles (my old ones are all messed up)? How do they
react with the Grose jets? I bought the Haynes manual, and I understand
the concept of the constant depression carb, but I still don't get how
the thing is built.

Thanks,

Larry