I'll +1 this as good information that matches my empirical experience (I am far from an extraction expert though). The distillate I get also comes with reintroduced terps but I usually buy the kinds that are supposed to use actual cannabis terps as opposed to fruit terps, etc. I was actually under the impression there was no way to make distillate without loosing the terps in the process which is why they always have to be reintroduced or else you get raw, flavorless distillate (which I've also tried).
Coming back to the Trinity. I'm similarly perplexed. All I have used so far in the Trinity tank is distillate and it worked perfectly. I haven't tried raw distillate though so the stuff I had will self level at room temp albeit slowly. It gets thin and runny fast when the Trinity tank heats up. After a hit if I turn the Trinity tank upside down the distillate quickly flows with gravity. The raw distillates I have tried is really really thick and I don't think would work in the Trinity tank. However, I have not tested this. Frankly the Trinity tanks are expensive and so is distillate so I don't want to experiment here.
@StormyPinkness Is this distillate, "The Clarity", you are getting really thicker than what I describe above? Did you try it without adding more terps first?