The clinch knot is not a very good knot to use with braid. Try the palomar knot.
I've never had an improved clinch knot give me problems. I use it 100% of the time!I can't get the line through the hook the second time, and I succeed in tying the palomar one out of 4 times I try... My fingers just aren't agile enough. I use a clinch with 7 loops, and then twice through the loop before pulling it tight... Maybe not as good as a palomar, but I can tie it.