sorry dude, Iswear I had a High Times Harvest report that dedicated at least a paragraph on resin/trichs and when to harvest. Somebody had to have walked off w/it....anyhow I DID find this much, it's a quote, and I go by it. "...set focus on almost transparant glandular trichomes. When ripe, most will be transparant to translucent, with a well formed ball at the top of the stalk. Buds start to deterriorate when the little ball on the stalk starts to deform and degrade.
Un fortunately, that is well past the time to flush. But that harvest report reported that 2 weeks before you harvest begin your flush.....BEFORE the trichs start to turn milky, and BEFORE three quarters of the hairs turn color. Hope that helps....