Thanks to everyone who has posted advice on this forum. I really appreciate your knowledge and insight.
I have assembled the bottom and side panels of my hull. The bottoms went together very well. The side panels were a little more difficult, but I got the bow looking good and moved to the stern. That's were the trouble began. I followed all of the steps in the manual and was able to close up the transom, though it will need a bit of fairing after the fillets and taping are complete. However, try as I might, I ended up with a hairline gap between the side panels and the bottom. The gap is on both sides and starts 8" forward of the transom and is about 6" in length. I can see light through it. I have tried putting in extra ties, but have been unsuccessful in closing it so far. I am not sure what to do at this point.
Thanks in advance for your help.