Honestly I've not... and need to. Lately I've had almost shamefully good luck farming, so I've just sort of been letting the bones roll. Twice this weekend I found a "happy chest" with 3 items (once it was 3 blues, the other time it was 2 blues and a purple) and 12 harvestables each. I'm not sure if it's because my Grimoire score is finally over 1900 or if it's just incidental. (I know 1900 is nothing much as Grimoires go, but bear in mind I hardly ever play Crucible, so I'm missing out on a lot of points from that source.) But yeah, you're quite right, I need to review the great work of other Guardians who have got farming down to a science. If nothing else I can use the mats to trade for Crucible rep and marks, too. And daddy needs a Fair And Square pulse rifle...