Alistair Inglis makes exactly the kind of contact frame that you need. It is a front loading frame with guides that assure easy and quick alignment of the negative and paper. Moreover, the frame holds the negative and paper in amazingly secure contact assuring that your prints will be as sharp as possible. Those of us who deal with Alistair can attest to his honesty. Moreover, everything he makes is of premium quality, and backed by his word-which means, of course, that you never have to worry about what you purchase from him. I have used the back loading split backed frames. The Inglis contact frame is much superior.
Let us know how you make out, and best wishes.