Nice technique, Dennis. I also have a solution to the what I call "horn drive" problem. I don't have the photos that depict the technique (a lot of them...) in reduced size to allow posting here, but I do have a PDF manual that I offer for free to anyone who wants the info. All they have to do is send me their email address with a request for the manual and I will send it out promptly.
I'll also include a few other manuals that I've prepared over the years on various building techniques. All the manuals are free for the asking.
Again, nice technique!
Bob Hunt
PS: Please send any requests for the manuals to robinhunt@rn.com