Just a query about applying drywall adhesive. Tried it today for the first time. mixed correctly and applied to walls badly consequently not all dabs have gripped the board and I've had to pull it down. I have seen on all the posts that the adhesive is put onto the wall but I think it would be easier and more accurate for me to lie the board across a table and apply the dabs directly to the board and then lift into place. Is this ok or is there some reason for the dabs to be applied to the wall. Any help welcome.