Danny,
Thanks for the details, hope Rossi gets it sorted out.

A new H.S. NV from Sahak is only $10.00; I may try re-configuring the tip of one of mine just so that I will have enough threads holding it in after getting the idle and H.S. needles set.

Some of my older 8mm (may be 8.5mm, not sure) carbs have different H.S. needles than the new carbs.