I usually harvest mine shortly after I start seeing amber maybe 20%. Waiting longer than that always seems 2 ripe 2 me sometimes the top buds are ready and the lower buds are not. I just wait a bit longer to harvest themYa know what I rarely if ever see amber trichs on living plants even going for long flower times.
What I see is a lot of clear\sparkly trichs that turn milky and lose the sparkle.........that's usually when they are about ready.
I seem to be the odd man out on this one not sure why.