I'm laying a Wickes laminate floor and am having trouble going through a doorway; on one side, I've cut away the frame / architrave to allow board to slip underneath (not that easy as clipping together of lengths requires a 30 degree 'clip' angle prior to flattening) but how do I now lay the length of board at the other side of the doorway to ensure that the board follows the profile of the door frame and that there are no gaps?