Best investment I ever made for bridle tying:
A board with a couple of nails in it. You can mess with one piece of the bridle until its right, then make another just like it.
Definitely try again. Even if you never make a whole bridle ever again (most people don't) you will be comfortable repairing or modifying a bridle (much more common).
Be sure to keep the original bridle on the kite until you've got the new one tweaked. It's easy to switch back and forth and see what the new one does different. Having the extra bridle flapping around as you fly is OK for testing.