My son is building a matunuck surf kayak and has got to the stage of taping the hull to the top. It is difficult to align the top and bottom because of the curvature in the top. The first attempt (all taped up) was 20mm out. Pulled the tape off, readjusted and taped again. this time the alignment is ok however the bow kicks up a little on one side so presuming we have forced a slight twist in the hull while taping. Any advice gladly received.