I've owned a OG brick for 2 days now. I'm getting the hang of it after combusting several times lol I'm sure it's been mentioned before but forgetting to close the carb = guaranteed combustion, really fast and blocking that hole with the cork is a very good idea for stoned novice brick owner. Since corking it's bung hole combustion hasn't really been an issue. Vape production is a bit random with both killer and teaser hits, but fun all the same. I love playing with the thing, snappy magnets and blocks are cool.