The amber trichs start on the lower sugar leaf.
The bud tip glands are misleading because they produce new glands there.

Look at the older glands for your amber.
They can be hard to see even with magnification.

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You can also cut a few lower branches.
Dry 'em and try 'em.

Amber, no amber.
They are ready when you say so, yah?

Aloha,
Weezard