hey guys...so I gota question....is it normal to get side effect like feeling a lot of pressure in the head when using the yellow stuff? I find the first pull or 2 when its all white this doesn't happen but when I use the yellow I do get this head pressure thing going on and sometimes a lil bit of discombfort in the stomach.the yellow also doesn't really taste that great too..just curious if this is normal? want to make sure there is nothing else going wrong with the extraction or anything...getting some heptane soon thinking about doing a re x on all this yellow stuff...anyone know a good tek I didn't see anything in the WIKI