I can't believe nobody has spotted this-
Ron, your drying T's are about 10 degrees too high... T's in the 80's is automatic TARFU for terpene loss! Overwhelmingly I see the parameters of about 70F and 50%RH as a "center line" to aim for, with about 1 week or so to fully dry before final moisture balancing and storage...
Many terpenes are highly volatile, and higher T's will drive the lighter (molecular weight) monoterpenes off much faster. Potency may not be badly effected, cannabinoids don't really gas-off, but the aromatics certainly do. Drying itself under the best conditions still shows (seen a couple studies on this) large losses of terp's in the process, just how it goes...
Most of us home growers are at the mercy of our ambient conditions, and finding a spot that's stable and within parameters can be a something of a challenge.
There is wiggle room on the 70/50% of course, and I must say the best cure I've had was when T were in mid-upper 60's, 40-45 RH%... Cooler T's held the terp's better, lower RH% helps pull the moisture out well enough under the lower T's which strongly affects the evaporation rate of water...
Time is another very important parameter! There is a host of breakdown reactions and processes that need to happen slowly, with a certain level of moisture present at that time to take place properly and produce highest quality smoke possible for a given cultivar.
Too fast- high T's and/or low RH%, and you end up with "green" tasting, harsh smoke and usually badly depleted terp's. Over-dried weed can rehydrate, but the quality loss can't be restored... Anybody that's speed dried a sample bud knows what happens when you force things to an extreme: harsh funky tasting stuff usually...
Too slow- low T's and/or high RH%, and you risk molding or other unwanted biological and breakdown activities....
Light conditions are more flexible, but darker is better and never in blazing light if you want the best results....