I have a hole there as well, I don't think you will have much luck completely sealing all the top, but that channel is the wrong one for that top and may or may not fix that hole. when you look into getting that channel tell them its for a 76-86 as I know those have the wider channel, and as stated above if its too long cut it in the middle to length. It comes in two pieces. I have installed 2 ewer tops and didn't have to cut either channel. any place that sells tops should have the channel.