I've got a buddy thats very frugal, he has had me run his shit 6x to make sure he gets everything. Well nowadays he only has me run it 3x, and is very satisfied. I give him back the used trim and he boils it in a crock pot to make butter with the leftover good stuff. Personally I run my own stuff 3x and the 1st run can be hard to tell from the 3rd you just get less each run. I guarantee that guy was running your stuff more than once, but like you said live and learn. I'm also sure that he got the lion share of the good stuff. I hope your happy with what you get, bubble hash done right using good weed or leaves is a beautiful thing. Take care GG and I hope all is well with you and yours
mal