So I've been having trouble getting my bho stable. I was wanting to try winterizing with Ethanol and running it through a buchner funnel. On bestvaluevacs.com there is options for both a fritted and non-fritted buchner funnel. Which one should I get and why lol? Also if anybody has any advice to make my stuff "shatter" I would appreciate it. Im using a best value vac 1lb closed column extractor. I boil off the excess butane in a water bath and try to keep temps below 100 def f. Then I put it in a vac chamber with a heat jacket. Ive tried temps from 90-110 deg f. My pressure gets between -28.5 and -29 hg. I'm usually using a mix of close trim and small lower buds. Sometimes I trim fan leaves and run the whole plant. I let the tube sit on dry ice about 2 hours before blasting and I have been getiting around 10% return. I was trying to purge for longer times in hopes to make it stable. Is it possible to over-purge lol? Sometimes it seems like my slabs will be see through and slightly stable like "snap and pull", for the first 24 hours. After another day or 2 it seems like it sugars up and turns slightly opaque. Final results are like crumble. I was thinking it was a strain thing but it seems like every strain comes out sticky. Thanks!