flushing

I am on my 4th grow now and have harvested some of the best looking and smelling buds ive ever come across.. the only issue is (and ive posted this 3 times or more).. that i can never get the smell that the plant had while growing back.. i completley dry it.. cure it for a few weeks and still nothing.. the only problem i have came down to is that i havent flushed it enough.. could this be what is keeping such a grassy taste in my bud? I got some flushing solution this time from advanced nutrients.. and started using it 14 days before harvest.. should this help me?

and it says not to mix it with other nutrients.. can i mix it with molasses? or switch on and off between the flush and molasses? then do complete flush the last 5 days

sounds like all the good stuff was in the first harvest, after that the plant couldnt put out. i wouldnt mix molasses with nutes the molasses slows down penitration to the soil if mixed with nutes.i think you got it right, switch between them maybe 7 days apart then flush