Simpson Oil Wont Thicken What's The Problem?

hi everyone. well like the title says made some simpson oil and it dont seem to want to thicken up like it did the first three or four times that I have made it. the first couple batches turned out real thick almost like a paste but this batch is kind of thin. I know I have all the alcohol cooked of for sure. is this something that will change due to it being a different strain? I did a half of a ml and it works pretty good had a real nice relaxed buzz for about 6hrs no taste of the iso at all. any input would be great thanks.

try leaving it out to airdry more. that thickens mine. keep it in the dark though. light kills thc. what percent is your isy?