try reading my thread about stronger plants.if you try this many of the problem you are having will disappear like magic.what were you feeding the plants during the transition from veg to flower?more than likely thats what started all your problems.the plant was happy with what you were doing then all of a sudden what the fuck.some things that we do to plants take alot longer to show up than you think.its not always the last thing you did maybe what you did before then